612913 has 4 divisors (see below), whose sum is σ = 700480. Its totient is φ = 525348.

The previous prime is 612889. The next prime is 612923. The reversal of 612913 is 319216.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 612913 - 2⁹ = 612401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (612923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43773 + ... + 43786.

It is an arithmetic number, because the mean of its divisors is an integer number (175120).

2⁶¹²⁹¹³ is an apocalyptic number.

It is an amenable number.

612913 is a deficient number, since it is larger than the sum of its proper divisors (87567).

612913 is an equidigital number, since it uses as much as digits as its factorization.

612913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87566.

The product of its digits is 324, while the sum is 22.

The square root of 612913 is about 782.8876036827. The cubic root of 612913 is about 84.9440462198.

The spelling of 612913 in words is "six hundred twelve thousand, nine hundred thirteen".