695957161 has 27 divisors (see below), whose sum is σ = 772624503. Its totient is φ = 626812560.

The previous prime is 695957159. The next prime is 695957189. The reversal of 695957161 is 161759596.

The square root of 695957161 is 26381.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 622752025 + 73205136 = 24955^2 + 8556^2 .

It is not a de Polignac number, because 695957161 - 2¹ = 695957159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (695957131) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 18809635 + ... + 18809671.

Almost surely, 2^695957161 is an apocalyptic number.

695957161 is the 26381-st square number.

695957161 is the 13191-st centered octagonal number.

It is an amenable number.

695957161 is a deficient number, since it is larger than the sum of its proper divisors (76667342).

695957161 is an equidigital number, since it uses as much as digits as its factorization.

695957161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182 (or 91 counting only the distinct ones).

The product of its digits is 510300, while the sum is 49.

The cubic root of 695957161 is about 886.1913418154.

Multiplying 695957161 by its sum of digits (49), we get a square (34101900889 = 184667²).

The spelling of 695957161 in words is "six hundred ninety-five million, nine hundred fifty-seven thousand, one hundred sixty-one".