715709947 has 2 divisors, whose sum is σ = 715709948. Its totient is φ = 715709946.

The previous prime is 715709887. The next prime is 715709963. The reversal of 715709947 is 749907517.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-715709947 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 715709947.

It is not a weakly prime, because it can be changed into another prime (715709047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 357854973 + 357854974.

It is an arithmetic number, because the mean of its divisors is an integer number (357854974).

Almost surely, 2^715709947 is an apocalyptic number.

715709947 is a deficient number, since it is larger than the sum of its proper divisors (1).

715709947 is an equidigital number, since it uses as much as digits as its factorization.

715709947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 555660, while the sum is 49.

The square root of 715709947 is about 26752.7558767317. The cubic root of 715709947 is about 894.4972664263.

The spelling of 715709947 in words is "seven hundred fifteen million, seven hundred nine thousand, nine hundred forty-seven".