76865765 has 4 divisors (see below), whose sum is σ = 92238924. Its totient is φ = 61492608.

The previous prime is 76865743. The next prime is 76865779. The reversal of 76865765 is 56756867.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27050401 + 49815364 = 5201^2 + 7058^2 .

It is a cyclic number.

It is not a de Polignac number, because 76865765 - 2²² = 72671461 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7686572 + ... + 7686581.

It is an arithmetic number, because the mean of its divisors is an integer number (23059731).

Almost surely, 2^76865765 is an apocalyptic number.

It is an amenable number.

76865765 is a deficient number, since it is larger than the sum of its proper divisors (15373159).

76865765 is a wasteful number, since it uses less digits than its factorization.

76865765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15373158.

The product of its digits is 2116800, while the sum is 50.

The square root of 76865765 is about 8767.3123019543. The cubic root of 76865765 is about 425.1847224686.

The spelling of 76865765 in words is "seventy-six million, eight hundred sixty-five thousand, seven hundred sixty-five".