723222664 has 8 divisors (see below), whose sum is σ = 1356042510. Its totient is φ = 361611328.

The previous prime is 723222623. The next prime is 723222679. The reversal of 723222664 is 466222327.

It can be written as a sum of positive squares in only one way, i.e., 408444100 + 314778564 = 20210^2 + 17742^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 45201409 + ... + 45201424.

Almost surely, 2^723222664 is an apocalyptic number.

It is an amenable number.

723222664 is a deficient number, since it is larger than the sum of its proper divisors (632819846).

723222664 is a wasteful number, since it uses less digits than its factorization.

723222664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90402839 (or 90402835 counting only the distinct ones).

The product of its digits is 48384, while the sum is 34.

The square root of 723222664 is about 26892.7994823893. The cubic root of 723222664 is about 897.6161870878.

The spelling of 723222664 in words is "seven hundred twenty-three million, two hundred twenty-two thousand, six hundred sixty-four".