715546661 has 2 divisors, whose sum is σ = 715546662. Its totient is φ = 715546660.

The previous prime is 715546633. The next prime is 715546709. The reversal of 715546661 is 166645517.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 546390625 + 169156036 = 23375^2 + 13006^2 .

It is an emirp because it is prime and its reverse (166645517) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 715546661 - 2⁶ = 715546597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (715546621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 357773330 + 357773331.

It is an arithmetic number, because the mean of its divisors is an integer number (357773331).

Almost surely, 2^715546661 is an apocalyptic number.

It is an amenable number.

715546661 is a deficient number, since it is larger than the sum of its proper divisors (1).

715546661 is an equidigital number, since it uses as much as digits as its factorization.

715546661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151200, while the sum is 41.

The square root of 715546661 is about 26749.7039422869. The cubic root of 715546661 is about 894.4292360786.

The spelling of 715546661 in words is "seven hundred fifteen million, five hundred forty-six thousand, six hundred sixty-one".