76621764 has 24 divisors (see below), whose sum is σ = 179309088. Its totient is φ = 25465600.

The previous prime is 76621759. The next prime is 76621777. The reversal of 76621764 is 46712667.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5037 + ... + 13364.

It is an arithmetic number, because the mean of its divisors is an integer number (7471212).

Almost surely, 2^76621764 is an apocalyptic number.

It is an amenable number.

76621764 is an abundant number, since it is smaller than the sum of its proper divisors (102687324).

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

76621764 is a wasteful number, since it uses less digits than its factorization.

76621764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18755 (or 18753 counting only the distinct ones).

The product of its digits is 84672, while the sum is 39.

The square root of 76621764 is about 8753.3858591976. The cubic root of 76621764 is about 424.7343465555.

The spelling of 76621764 in words is "seventy-six million, six hundred twenty-one thousand, seven hundred sixty-four".