65840076 has 72 divisors (see below), whose sum is σ = 175279104. Its totient is φ = 20797920.

The previous prime is 65840069. The next prime is 65840083. The reversal of 65840076 is 67004856.

It is a happy number.

65840076 is a `hidden beast` number, since 6 + 584 + 0 + 0 + 76 = 666.

It is an interprime number because it is at equal distance from previous prime (65840069) and next prime (65840083).

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

It is a self number, because there is not a number n which added to its sum of digits gives 65840076.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 108165 + ... + 108771.

It is an arithmetic number, because the mean of its divisors is an integer number (2434432).

Almost surely, 2^65840076 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65840076, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87639552).

65840076 is an abundant number, since it is smaller than the sum of its proper divisors (109439028).

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

65840076 is a wasteful number, since it uses less digits than its factorization.

65840076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771 (or 766 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 65840076 is about 8114.1897931956. The cubic root of 65840076 is about 403.7973283347.

Subtracting from 65840076 its product of nonzero digits (40320), we obtain a palindrome (65799756).

The spelling of 65840076 in words is "sixty-five million, eight hundred forty thousand, seventy-six".