77223264 has 24 divisors (see below), whose sum is σ = 202711320. Its totient is φ = 25741056.

The previous prime is 77223247. The next prime is 77223331. The reversal of 77223264 is 46232277.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 402109 + ... + 402300.

It is an arithmetic number, because the mean of its divisors is an integer number (8446305).

Almost surely, 2^77223264 is an apocalyptic number.

It is an amenable number.

77223264 is an abundant number, since it is smaller than the sum of its proper divisors (125488056).

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

77223264 is a wasteful number, since it uses less digits than its factorization.

77223264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804422 (or 804414 counting only the distinct ones).

The product of its digits is 28224, while the sum is 33.

The square root of 77223264 is about 8787.6768261014. The cubic root of 77223264 is about 425.8428744518.

The spelling of 77223264 in words is "seventy-seven million, two hundred twenty-three thousand, two hundred sixty-four".