612857 has 8 divisors (see below), whose sum is σ = 724800. Its totient is φ = 507024.

The previous prime is 612853. The next prime is 612869. The reversal of 612857 is 758216.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 612857 - 2² = 612853 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (612853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1307 + ... + 1712.

It is an arithmetic number, because the mean of its divisors is an integer number (90600).

2⁶¹²⁸⁵⁷ is an apocalyptic number.

It is an amenable number.

612857 is a deficient number, since it is larger than the sum of its proper divisors (111943).

612857 is a wasteful number, since it uses less digits than its factorization.

612857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3055.

The product of its digits is 3360, while the sum is 29.

The square root of 612857 is about 782.8518378340. The cubic root of 612857 is about 84.9414591145.

The spelling of 612857 in words is "six hundred twelve thousand, eight hundred fifty-seven".