76628565 has 64 divisors (see below), whose sum is σ = 149990400. Its totient is φ = 36882432.

The previous prime is 76628561. The next prime is 76628579. The reversal of 76628565 is 56582667.

76628565 is a `hidden beast` number, since 7 + 66 + 28 + 565 = 666.

It is not a de Polignac number, because 76628565 - 2² = 76628561 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 76628565.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76628561) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 82021 + ... + 82949.

It is an arithmetic number, because the mean of its divisors is an integer number (2343600).

Almost surely, 2^76628565 is an apocalyptic number.

It is an amenable number.

76628565 is a deficient number, since it is larger than the sum of its proper divisors (73361835).

76628565 is a wasteful number, since it uses less digits than its factorization.

76628565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1003 (or 997 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 76628565 is about 8753.7743288253. The cubic root of 76628565 is about 424.7469127538.

The spelling of 76628565 in words is "seventy-six million, six hundred twenty-eight thousand, five hundred sixty-five".