722574 has 16 divisors (see below), whose sum is σ = 1605840. Its totient is φ = 240840.

The previous prime is 722563. The next prime is 722581. The reversal of 722574 is 475227.

It is a super-2 number, since 2×722574² = 1044226370952, which contains 22 as substring.

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

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6637 + ... + 6744.

It is an arithmetic number, because the mean of its divisors is an integer number (100365).

2⁷²²⁵⁷⁴ is an apocalyptic number.

722574 is an abundant number, since it is smaller than the sum of its proper divisors (883266).

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

722574 is a wasteful number, since it uses less digits than its factorization.

722574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13392 (or 13386 counting only the distinct ones).

The product of its digits is 3920, while the sum is 27.

The square root of 722574 is about 850.0435282972. The cubic root of 722574 is about 89.7347747183.

722574 divided by its sum of digits (27) gives a palindrome (26762).

It can be divided in two parts, 722 and 574, that added together give a 4-th power (1296 = 6⁴).

The spelling of 722574 in words is "seven hundred twenty-two thousand, five hundred seventy-four".