724624 has 10 divisors (see below), whose sum is σ = 1403990. Its totient is φ = 362304.

The previous prime is 724621. The next prime is 724627. The reversal of 724624 is 426427.

It is an interprime number because it is at equal distance from previous prime (724621) and next prime (724627).

It can be written as a sum of positive squares in only one way, i.e., 692224 + 32400 = 832^2 + 180^2 .

It is not an unprimeable number, because it can be changed into a prime (724621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22629 + ... + 22660.

It is an arithmetic number, because the mean of its divisors is an integer number (140399).

2⁷²⁴⁶²⁴ is an apocalyptic number.

It is an amenable number.

724624 is a deficient number, since it is larger than the sum of its proper divisors (679366).

724624 is a wasteful number, since it uses less digits than its factorization.

724624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45297 (or 45291 counting only the distinct ones).

The product of its digits is 2688, while the sum is 25.

The square root of 724624 is about 851.2484948592. The cubic root of 724624 is about 89.8195561597.

The spelling of 724624 in words is "seven hundred twenty-four thousand, six hundred twenty-four".