722220264 has 24 divisors (see below), whose sum is σ = 1956013410. Its totient is φ = 240740064.

The previous prime is 722220259. The next prime is 722220277. The reversal of 722220264 is 462022227.

It can be written as a sum of positive squares in only one way, i.e., 545596164 + 176624100 = 23358^2 + 13290^2 .

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

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5015347 + ... + 5015490.

Almost surely, 2^722220264 is an apocalyptic number.

It is an amenable number.

722220264 is an abundant number, since it is smaller than the sum of its proper divisors (1233793146).

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

722220264 is a wasteful number, since it uses less digits than its factorization.

722220264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10030849 (or 10030842 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 722220264 is about 26874.1560611678. The cubic root of 722220264 is about 897.2012911272.

The spelling of 722220264 in words is "seven hundred twenty-two million, two hundred twenty thousand, two hundred sixty-four".