712661 has 8 divisors (see below), whose sum is σ = 743040. Its totient is φ = 683008.

The previous prime is 712651. The next prime is 712669. The reversal of 712661 is 166217.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-712661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 712661.

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 7 ways as a sum of consecutive naturals, for example, 2645 + ... + 2901.

It is an arithmetic number, because the mean of its divisors is an integer number (92880).

2⁷¹²⁶⁶¹ is an apocalyptic number.

It is an amenable number.

712661 is a deficient number, since it is larger than the sum of its proper divisors (30379).

712661 is a wasteful number, since it uses less digits than its factorization.

712661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363.

The product of its digits is 504, while the sum is 23.

The square root of 712661 is about 844.1925135892. The cubic root of 712661 is about 89.3225262910.

Adding to 712661 its reverse (166217), we get a palindrome (878878).

The spelling of 712661 in words is "seven hundred twelve thousand, six hundred sixty-one".