723072664 has 16 divisors (see below), whose sum is σ = 1427117400. Its totient is φ = 342508032.

The previous prime is 723072661. The next prime is 723072673. The reversal of 723072664 is 466270327.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (723072661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2378377 + ... + 2378680.

Almost surely, 2^723072664 is an apocalyptic number.

It is an amenable number.

723072664 is a deficient number, since it is larger than the sum of its proper divisors (704044736).

723072664 is a wasteful number, since it uses less digits than its factorization.

723072664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4757082 (or 4757078 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 37.

The square root of 723072664 is about 26890.0104871679. The cubic root of 723072664 is about 897.5541261005.

The spelling of 723072664 in words is "seven hundred twenty-three million, seventy-two thousand, six hundred sixty-four".