76634920 has 32 divisors (see below), whose sum is σ = 173007720. Its totient is φ = 30551040.

The previous prime is 76634911. The next prime is 76634927. The reversal of 76634920 is 2943667.

It can be written as a sum of positive squares in 4 ways, for example, as 19873764 + 56761156 = 4458^2 + 7534^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 76634920.

It is not an unprimeable number, because it can be changed into a prime (76634927) by changing a digit.

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, 9460 + ... + 15580.

Almost surely, 2^76634920 is an apocalyptic number.

It is an amenable number.

76634920 is an abundant number, since it is smaller than the sum of its proper divisors (96372800).

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

76634920 is a wasteful number, since it uses less digits than its factorization.

76634920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6445 (or 6441 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 76634920 is about 8754.1373075821. The cubic root of 76634920 is about 424.7586542065.

The spelling of 76634920 in words is "seventy-six million, six hundred thirty-four thousand, nine hundred twenty".