722172704 has 24 divisors (see below), whose sum is σ = 1551030768. Its totient is φ = 328260160.

The previous prime is 722172643. The next prime is 722172707. The reversal of 722172704 is 407271227.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (722172707) 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, 1025462 + ... + 1026165.

It is an arithmetic number, because the mean of its divisors is an integer number (64626282).

Almost surely, 2^722172704 is an apocalyptic number.

It is an amenable number.

722172704 is an abundant number, since it is smaller than the sum of its proper divisors (828858064).

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

722172704 is a wasteful number, since it uses less digits than its factorization.

722172704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2051648 (or 2051640 counting only the distinct ones).

The product of its (nonzero) digits is 10976, while the sum is 32.

The square root of 722172704 is about 26873.2711816035. The cubic root of 722172704 is about 897.1815963829.

The spelling of 722172704 in words is "seven hundred twenty-two million, one hundred seventy-two thousand, seven hundred four".