77225994 has 32 divisors (see below), whose sum is σ = 180648000. Its totient is φ = 24386832.

The previous prime is 77225971. The next prime is 77225999. The reversal of 77225994 is 49952277.

It is not an unprimeable number, because it can be changed into a prime (77225999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36609 + ... + 38660.

It is an arithmetic number, because the mean of its divisors is an integer number (5645250).

Almost surely, 2^77225994 is an apocalyptic number.

77225994 is an abundant number, since it is smaller than the sum of its proper divisors (103422006).

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

77225994 is a wasteful number, since it uses less digits than its factorization.

77225994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75299 (or 75293 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 77225994 is about 8787.8321558846. The cubic root of 77225994 is about 425.8478925309.

The spelling of 77225994 in words is "seventy-seven million, two hundred twenty-five thousand, nine hundred ninety-four".