404613 has 24 divisors (see below), whose sum is σ = 657696. Its totient is φ = 237600.

The previous prime is 404597. The next prime is 404671. The reversal of 404613 is 316404.

It is not a de Polignac number, because 404613 - 2⁴ = 404597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404693) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6006 + ... + 6072.

It is an arithmetic number, because the mean of its divisors is an integer number (27404).

2⁴⁰⁴⁶¹³ is an apocalyptic number.

It is an amenable number.

404613 is a deficient number, since it is larger than the sum of its proper divisors (253083).

404613 is a wasteful number, since it uses less digits than its factorization.

404613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 404613 is about 636.0919744817. The cubic root of 404613 is about 73.9627886932.

Subtracting from 404613 its reverse (316404), we obtain a square (88209 = 297²).

The spelling of 404613 in words is "four hundred four thousand, six hundred thirteen".