712689 has 4 divisors (see below), whose sum is σ = 950256. Its totient is φ = 475124.

The previous prime is 712687. The next prime is 712693. The reversal of 712689 is 986217.

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 712689 - 2¹ = 712687 is a prime.

It is a super-2 number, since 2×712689² = 1015851221442, which contains 22 as substring.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (712681) 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, 118779 + ... + 118784.

It is an arithmetic number, because the mean of its divisors is an integer number (237564).

2⁷¹²⁶⁸⁹ is an apocalyptic number.

It is an amenable number.

712689 is a deficient number, since it is larger than the sum of its proper divisors (237567).

712689 is a wasteful number, since it uses less digits than its factorization.

712689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237566.

The product of its digits is 6048, while the sum is 33.

The square root of 712689 is about 844.2090973213. The cubic root of 712689 is about 89.3236960842.

The spelling of 712689 in words is "seven hundred twelve thousand, six hundred eighty-nine".