696257131 has 4 divisors (see below), whose sum is σ = 709394112. Its totient is φ = 683120152.

The previous prime is 696257129. The next prime is 696257141. The reversal of 696257131 is 131752696.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 696257131 - 2¹ = 696257129 is a prime.

It is a super-2 number, since 2×696257131² = 969547984936702322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (696257141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6568411 + ... + 6568516.

It is an arithmetic number, because the mean of its divisors is an integer number (177348528).

Almost surely, 2^696257131 is an apocalyptic number.

696257131 is a deficient number, since it is larger than the sum of its proper divisors (13136981).

696257131 is a wasteful number, since it uses less digits than its factorization.

696257131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13136980.

The product of its digits is 68040, while the sum is 40.

The square root of 696257131 is about 26386.6847292342. The cubic root of 696257131 is about 886.3186449734.

The spelling of 696257131 in words is "six hundred ninety-six million, two hundred fifty-seven thousand, one hundred thirty-one".