76691620 has 24 divisors (see below), whose sum is σ = 163094400. Its totient is φ = 30287712.

The previous prime is 76691611. The next prime is 76691621. The reversal of 76691620 is 2619667.

It is a self number, because there is not a number n which added to its sum of digits gives 76691620.

It is not an unprimeable number, because it can be changed into a prime (76691621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22690 + ... + 25849.

It is an arithmetic number, because the mean of its divisors is an integer number (6795600).

Almost surely, 2^76691620 is an apocalyptic number.

It is an amenable number.

76691620 is an abundant number, since it is smaller than the sum of its proper divisors (86402780).

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

76691620 is a wasteful number, since it uses less digits than its factorization.

76691620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48627 (or 48625 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 76691620 is about 8757.3751775289. The cubic root of 76691620 is about 424.8633840019.

The spelling of 76691620 in words is "seventy-six million, six hundred ninety-one thousand, six hundred twenty".