696816681 has 8 divisors (see below), whose sum is σ = 1013551584. Its totient is φ = 422313120.

The previous prime is 696816629. The next prime is 696816709. The reversal of 696816681 is 186618696.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 696816681 - 2¹⁰ = 696815657 is a prime.

It is a super-2 number, since 2×696816681² = 971106973839711522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (696816581) 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 7 ways as a sum of consecutive naturals, for example, 10557796 + ... + 10557861.

It is an arithmetic number, because the mean of its divisors is an integer number (126693948).

Almost surely, 2^696816681 is an apocalyptic number.

It is an amenable number.

696816681 is a deficient number, since it is larger than the sum of its proper divisors (316734903).

696816681 is a wasteful number, since it uses less digits than its factorization.

696816681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21115671.

The product of its digits is 746496, while the sum is 51.

The square root of 696816681 is about 26397.2854854434. The cubic root of 696816681 is about 886.5560126452.

The spelling of 696816681 in words is "six hundred ninety-six million, eight hundred sixteen thousand, six hundred eighty-one".