77608940 has 12 divisors (see below), whose sum is σ = 162978816. Its totient is φ = 31043568.

The previous prime is 77608931. The next prime is 77608957. The reversal of 77608940 is 4980677.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1940204 + ... + 1940243.

It is an arithmetic number, because the mean of its divisors is an integer number (13581568).

Almost surely, 2^77608940 is an apocalyptic number.

It is an amenable number.

77608940 is an abundant number, since it is smaller than the sum of its proper divisors (85369876).

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

77608940 is a wasteful number, since it uses less digits than its factorization.

77608940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3880456 (or 3880454 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 77608940 is about 8809.5936342149. The cubic root of 77608940 is about 426.5506262667.

The spelling of 77608940 in words is "seventy-seven million, six hundred eight thousand, nine hundred forty".