77722896 has 20 divisors (see below), whose sum is σ = 200784272. Its totient is φ = 25907616.

The previous prime is 77722891. The next prime is 77722907. The reversal of 77722896 is 69822777.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 1619227 = 77722896 / (7 + 7 + 7 + 2 + 2 + 8 + 9 + 6).

It is not an unprimeable number, because it can be changed into a prime (77722891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 809566 + ... + 809661.

Almost surely, 2^77722896 is an apocalyptic number.

It is an amenable number.

77722896 is an abundant number, since it is smaller than the sum of its proper divisors (123061376).

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

77722896 is a wasteful number, since it uses less digits than its factorization.

77722896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1619238 (or 1619232 counting only the distinct ones).

The product of its digits is 592704, while the sum is 48.

The square root of 77722896 is about 8816.0589834687. The cubic root of 77722896 is about 426.7592973794.

The spelling of 77722896 in words is "seventy-seven million, seven hundred twenty-two thousand, eight hundred ninety-six".