77476456 has 8 divisors (see below), whose sum is σ = 145268370. Its totient is φ = 38738224.

The previous prime is 77476447. The next prime is 77476459. The reversal of 77476456 is 65467477.

It can be written as a sum of positive squares in only one way, i.e., 61873956 + 15602500 = 7866^2 + 3950^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (77476459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4842271 + ... + 4842286.

Almost surely, 2^77476456 is an apocalyptic number.

It is an amenable number.

77476456 is a deficient number, since it is larger than the sum of its proper divisors (67791914).

77476456 is a wasteful number, since it uses less digits than its factorization.

77476456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9684563 (or 9684559 counting only the distinct ones).

The product of its digits is 987840, while the sum is 46.

The square root of 77476456 is about 8802.0711199126. The cubic root of 77476456 is about 426.3077705688.

The spelling of 77476456 in words is "seventy-seven million, four hundred seventy-six thousand, four hundred fifty-six".