712665 has 16 divisors (see below), whose sum is σ = 1267200. Its totient is φ = 380016.

The previous prime is 712651. The next prime is 712669. The reversal of 712665 is 566217.

It is not a de Polignac number, because 712665 - 2⁶ = 712601 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (712669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2505 + ... + 2774.

It is an arithmetic number, because the mean of its divisors is an integer number (79200).

2⁷¹²⁶⁶⁵ is an apocalyptic number.

It is an amenable number.

712665 is a deficient number, since it is larger than the sum of its proper divisors (554535).

712665 is a wasteful number, since it uses less digits than its factorization.

712665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5293 (or 5287 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 712665 is about 844.1948827137. The cubic root of 712665 is about 89.3226934062.

The spelling of 712665 in words is "seven hundred twelve thousand, six hundred sixty-five".