77862976 has 21 divisors (see below), whose sum is σ = 154649551. Its totient is φ = 38896192.

The previous prime is 77862943. The next prime is 77862997. The reversal of 77862976 is 67926877.

It is a happy number.

The square root of 77862976 is 8824.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 70041 + ... + 71143.

Almost surely, 2^77862976 is an apocalyptic number.

77862976 is the 8824-th square number.

It is an amenable number.

77862976 is a deficient number, since it is larger than the sum of its proper divisors (76786575).

77862976 is an frugal number, since it uses more digits than its factorization.

77862976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2218 (or 1105 counting only the distinct ones).

The product of its digits is 1778112, while the sum is 52.

The cubic root of 77862976 is about 427.0155263127.

The spelling of 77862976 in words is "seventy-seven million, eight hundred sixty-two thousand, nine hundred seventy-six".