65082780 has 216 divisors, whose sum is σ = 236029248. Its totient is φ = 14466816.

The previous prime is 65082767. The next prime is 65082839. The reversal of 65082780 is 8728056.

65082780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 71 ways as a sum of consecutive naturals, for example, 414462 + ... + 414618.

It is an arithmetic number, because the mean of its divisors is an integer number (1092728).

Almost surely, 2^65082780 is an apocalyptic number.

65082780 is a gapful number since it is divisible by the number (60) 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 65082780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118014624).

65082780 is an abundant number, since it is smaller than the sum of its proper divisors (170946468).

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

65082780 is a wasteful number, since it uses less digits than its factorization.

65082780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233 (or 221 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 65082780 is about 8067.3899124810. The cubic root of 65082780 is about 402.2431884154.

The spelling of 65082780 in words is "sixty-five million, eighty-two thousand, seven hundred eighty".