77973008 has 20 divisors (see below), whose sum is σ = 151539408. Its totient is φ = 38866080.

The previous prime is 77973001. The next prime is 77973011. The reversal of 77973008 is 80037977.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (77973001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2066 + ... + 12657.

Almost surely, 2^77973008 is an apocalyptic number.

It is an amenable number.

77973008 is a deficient number, since it is larger than the sum of its proper divisors (73566400).

77973008 is a wasteful number, since it uses less digits than its factorization.

77973008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15062 (or 15056 counting only the distinct ones).

The product of its (nonzero) digits is 74088, while the sum is 41.

The square root of 77973008 is about 8830.2326130176. The cubic root of 77973008 is about 427.2165771831.

Subtracting 77973008 from its reverse (80037977), we obtain a square (2064969 = 1437²).

The spelling of 77973008 in words is "seventy-seven million, nine hundred seventy-three thousand, eight".