712675661 has 2 divisors, whose sum is σ = 712675662. Its totient is φ = 712675660.

The previous prime is 712675637. The next prime is 712675703. The reversal of 712675661 is 166576217.

712675661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 468722500 + 243953161 = 21650^2 + 15619^2 .

It is a cyclic number.

It is not a de Polignac number, because 712675661 - 2¹⁸ = 712413517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (712675361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 356337830 + 356337831.

It is an arithmetic number, because the mean of its divisors is an integer number (356337831).

Almost surely, 2^712675661 is an apocalyptic number.

It is an amenable number.

712675661 is a deficient number, since it is larger than the sum of its proper divisors (1).

712675661 is an equidigital number, since it uses as much as digits as its factorization.

712675661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 105840, while the sum is 41.

The square root of 712675661 is about 26695.9858593010. The cubic root of 712675661 is about 893.2313880690.

The spelling of 712675661 in words is "seven hundred twelve million, six hundred seventy-five thousand, six hundred sixty-one".