612605 has 16 divisors (see below), whose sum is σ = 877824. Its totient is φ = 401280.

The previous prime is 612589. The next prime is 612611. The reversal of 612605 is 506216.

612605 = 8² + 9² + ... + 122².

It is not a de Polignac number, because 612605 - 2⁴ = 612589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 425 + ... + 1185.

It is an arithmetic number, because the mean of its divisors is an integer number (54864).

2⁶¹²⁶⁰⁵ is an apocalyptic number.

It is an amenable number.

612605 is a deficient number, since it is larger than the sum of its proper divisors (265219).

612605 is a wasteful number, since it uses less digits than its factorization.

612605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 612605 is about 782.6908712896. The cubic root of 612605 is about 84.9298151898.

The spelling of 612605 in words is "six hundred twelve thousand, six hundred five".