712857 has 4 divisors (see below), whose sum is σ = 950480. Its totient is φ = 475236.

The previous prime is 712847. The next prime is 712883. The reversal of 712857 is 758217.

It is a happy number.

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 not a de Polignac number, because 712857 - 2⁴ = 712841 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (712807) 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, 118807 + ... + 118812.

It is an arithmetic number, because the mean of its divisors is an integer number (237620).

2⁷¹²⁸⁵⁷ is an apocalyptic number.

It is an amenable number.

712857 is a deficient number, since it is larger than the sum of its proper divisors (237623).

712857 is a wasteful number, since it uses less digits than its factorization.

712857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237622.

The product of its digits is 3920, while the sum is 30.

The square root of 712857 is about 844.3085928735. The cubic root of 712857 is about 89.3307142001.

The spelling of 712857 in words is "seven hundred twelve thousand, eight hundred fifty-seven".