683606691 has 12 divisors (see below), whose sum is σ = 988354432. Its totient is φ = 455312016.

The previous prime is 683606663. The next prime is 683606701. The reversal of 683606691 is 196606386.

It is not a de Polignac number, because 683606691 - 2⁵ = 683606659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (683606291) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25156 + ... + 44721.

Almost surely, 2^683606691 is an apocalyptic number.

683606691 is a deficient number, since it is larger than the sum of its proper divisors (304747741).

683606691 is a wasteful number, since it uses less digits than its factorization.

683606691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70970 (or 70967 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 683606691 is about 26145.8733072736. The cubic root of 683606691 is about 880.9179002749.

The spelling of 683606691 in words is "six hundred eighty-three million, six hundred six thousand, six hundred ninety-one".