76808641 has 12 divisors (see below), whose sum is σ = 95054592. Its totient is φ = 60770736.

The previous prime is 76808623. The next prime is 76808647. The reversal of 76808641 is 14680867.

It is not a de Polignac number, because 76808641 - 2¹⁵ = 76775873 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 76808594 and 76808603.

It is not an unprimeable number, because it can be changed into a prime (76808647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31281 + ... + 33646.

It is an arithmetic number, because the mean of its divisors is an integer number (7921216).

Almost surely, 2^76808641 is an apocalyptic number.

It is an amenable number.

76808641 is a deficient number, since it is larger than the sum of its proper divisors (18245951).

76808641 is a wasteful number, since it uses less digits than its factorization.

76808641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64960 (or 64947 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 76808641 is about 8764.0539135722. The cubic root of 76808641 is about 425.0793687986.

The spelling of 76808641 in words is "seventy-six million, eight hundred eight thousand, six hundred forty-one".