77799216 has 40 divisors (see below), whose sum is σ = 219253824. Its totient is φ = 23575360.

The previous prime is 77799203. The next prime is 77799251. The reversal of 77799216 is 61299777.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73146 + ... + 74201.

Almost surely, 2^77799216 is an apocalyptic number.

It is an amenable number.

77799216 is an abundant number, since it is smaller than the sum of its proper divisors (141454608).

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

77799216 is a wasteful number, since it uses less digits than its factorization.

77799216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147369 (or 147363 counting only the distinct ones).

The product of its digits is 333396, while the sum is 48.

The square root of 77799216 is about 8820.3863860944. The cubic root of 77799216 is about 426.8989371178.

The spelling of 77799216 in words is "seventy-seven million, seven hundred ninety-nine thousand, two hundred sixteen".