65880276 has 192 divisors, whose sum is σ = 205922304. Its totient is φ = 15897600.

The previous prime is 65880271. The next prime is 65880281. The reversal of 65880276 is 67208856.

65880276 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (65880271) and next prime (65880281).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65880271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1401685 + ... + 1401731.

It is an arithmetic number, because the mean of its divisors is an integer number (1072512).

Almost surely, 2^65880276 is an apocalyptic number.

65880276 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65880276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102961152).

65880276 is an abundant number, since it is smaller than the sum of its proper divisors (140042028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65880276 is a wasteful number, since it uses less digits than its factorization.

65880276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150 (or 148 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 65880276 is about 8116.6665571526. Note that the first 3 decimals coincide. The cubic root of 65880276 is about 403.8794938433.

The spelling of 65880276 in words is "sixty-five million, eight hundred eighty thousand, two hundred seventy-six".