715772161 has 16 divisors (see below), whose sum is σ = 813904000. Its totient is φ = 624008448.

The previous prime is 715772149. The next prime is 715772177. The reversal of 715772161 is 161277517.

It is a cyclic number.

It is not a de Polignac number, because 715772161 - 2¹¹ = 715770113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 715772161.

It is not an unprimeable number, because it can be changed into a prime (715772861) 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, 78940 + ... + 87538.

It is an arithmetic number, because the mean of its divisors is an integer number (50869000).

Almost surely, 2^715772161 is an apocalyptic number.

It is an amenable number.

715772161 is a deficient number, since it is larger than the sum of its proper divisors (98131839).

715772161 is a wasteful number, since it uses less digits than its factorization.

715772161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8968.

The product of its digits is 20580, while the sum is 37.

The square root of 715772161 is about 26753.9186101775. The cubic root of 715772161 is about 894.5231841139.

The spelling of 715772161 in words is "seven hundred fifteen million, seven hundred seventy-two thousand, one hundred sixty-one".