77481904 has 20 divisors (see below), whose sum is σ = 150700176. Its totient is φ = 38591552.

The previous prime is 77481889. The next prime is 77481913. The reversal of 77481904 is 40918477.

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, 4999 + ... + 13414.

Almost surely, 2^77481904 is an apocalyptic number.

It is an amenable number.

77481904 is a deficient number, since it is larger than the sum of its proper divisors (73218272).

77481904 is a wasteful number, since it uses less digits than its factorization.

77481904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18684 (or 18678 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 77481904 is about 8802.3805870912. The cubic root of 77481904 is about 426.3177627239.

The spelling of 77481904 in words is "seventy-seven million, four hundred eighty-one thousand, nine hundred four".