722516464 has 40 divisors (see below), whose sum is σ = 1445170400. Its totient is φ = 349671168.

The previous prime is 722516461. The next prime is 722516467. The reversal of 722516464 is 464615227.

It is an interprime number because it is at equal distance from previous prime (722516461) and next prime (722516467).

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722516461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114742 + ... + 120874.

It is an arithmetic number, because the mean of its divisors is an integer number (36129260).

Almost surely, 2^722516464 is an apocalyptic number.

722516464 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is an amenable number.

722516464 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

722516464 is a wasteful number, since it uses less digits than its factorization.

722516464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6377 (or 6371 counting only the distinct ones).

The product of its digits is 80640, while the sum is 37.

The square root of 722516464 is about 26879.6663669771. Note that the first 3 decimals coincide. The cubic root of 722516464 is about 897.3239290137.

The spelling of 722516464 in words is "seven hundred twenty-two million, five hundred sixteen thousand, four hundred sixty-four".