77222994 has 16 divisors (see below), whose sum is σ = 156751968. Its totient is φ = 25356672.

The previous prime is 77222989. The next prime is 77223017. The reversal of 77222994 is 49922277.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 95647 + ... + 96450.

It is an arithmetic number, because the mean of its divisors is an integer number (9796998).

Almost surely, 2^77222994 is an apocalyptic number.

77222994 is an abundant number, since it is smaller than the sum of its proper divisors (79528974).

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

77222994 is a wasteful number, since it uses less digits than its factorization.

77222994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192169.

The product of its digits is 127008, while the sum is 42.

The square root of 77222994 is about 8787.6614636660. The cubic root of 77222994 is about 425.8423781519.

The spelling of 77222994 in words is "seventy-seven million, two hundred twenty-two thousand, nine hundred ninety-four".