77908632 has 16 divisors (see below), whose sum is σ = 194771640. Its totient is φ = 25969536.

The previous prime is 77908631. The next prime is 77908661. The reversal of 77908632 is 23680977.

It is a super-2 number, since 2×77908632² = 12139509880222848, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77908631) 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 3 ways as a sum of consecutive naturals, for example, 1623073 + ... + 1623120.

Almost surely, 2^77908632 is an apocalyptic number.

It is an amenable number.

77908632 is an abundant number, since it is smaller than the sum of its proper divisors (116863008).

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

77908632 is a wasteful number, since it uses less digits than its factorization.

77908632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3246202 (or 3246198 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 77908632 is about 8826.5866562335. The cubic root of 77908632 is about 427.0989720981.

The spelling of 77908632 in words is "seventy-seven million, nine hundred eight thousand, six hundred thirty-two".