613924 has 12 divisors (see below), whose sum is σ = 1109248. Its totient is φ = 297000.

The previous prime is 613903. The next prime is 613957. The reversal of 613924 is 429316.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

613924 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2352 + ... + 2599.

2⁶¹³⁹²⁴ is an apocalyptic number.

It is an amenable number.

613924 is a deficient number, since it is larger than the sum of its proper divisors (495324).

613924 is a wasteful number, since it uses less digits than its factorization.

613924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4986 (or 4984 counting only the distinct ones).

The product of its digits is 1296, while the sum is 25.

The square root of 613924 is about 783.5330241923. The cubic root of 613924 is about 84.9907256317.

The spelling of 613924 in words is "six hundred thirteen thousand, nine hundred twenty-four".