396724 has 6 divisors (see below), whose sum is σ = 694274. Its totient is φ = 198360.

The previous prime is 396719. The next prime is 396733. The reversal of 396724 is 427693.

It can be written as a sum of positive squares in only one way, i.e., 324900 + 71824 = 570^2 + 268^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49587 + ... + 49594.

2³⁹⁶⁷²⁴ is an apocalyptic number.

It is an amenable number.

396724 is a deficient number, since it is larger than the sum of its proper divisors (297550).

396724 is a wasteful number, since it uses less digits than its factorization.

396724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99185 (or 99183 counting only the distinct ones).

The product of its digits is 9072, while the sum is 31.

The square root of 396724 is about 629.8603019718. The cubic root of 396724 is about 73.4789302063.

Subtracting from 396724 its sum of digits (31), we obtain a palindrome (396693).

The spelling of 396724 in words is "three hundred ninety-six thousand, seven hundred twenty-four".