696765681 has 6 divisors (see below), whose sum is σ = 1006439330. Its totient is φ = 464510448.

The previous prime is 696765659. The next prime is 696765691. The reversal of 696765681 is 186567696.

696765681 is a `hidden beast` number, since 6 + 9 + 6 + 76 + 568 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 450118656 + 246647025 = 21216^2 + 15705^2 .

It is not a de Polignac number, because 696765681 - 2¹⁰ = 696764657 is a prime.

It is a super-2 number, since 2×696765681² = 970964828438787522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (696765691) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38709196 + ... + 38709213.

Almost surely, 2^696765681 is an apocalyptic number.

It is an amenable number.

696765681 is a deficient number, since it is larger than the sum of its proper divisors (309673649).

696765681 is a wasteful number, since it uses less digits than its factorization.

696765681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77418415 (or 77418412 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The square root of 696765681 is about 26396.3194593489. The cubic root of 696765681 is about 886.5343831114.

It can be divided in two parts, 69676 and 5681, that added together give a palindrome (75357).

The spelling of 696765681 in words is "six hundred ninety-six million, seven hundred sixty-five thousand, six hundred eighty-one".