683708691 has 16 divisors (see below), whose sum is σ = 920162304. Its totient is φ = 451541664.

The previous prime is 683708653. The next prime is 683708699. The reversal of 683708691 is 196807386.

It is not a de Polignac number, because 683708691 - 2¹³ = 683700499 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 683708691.

It is not an unprimeable number, because it can be changed into a prime (683708699) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 497281 + ... + 498653.

It is an arithmetic number, because the mean of its divisors is an integer number (57510144).

Almost surely, 2^683708691 is an apocalyptic number.

683708691 is a deficient number, since it is larger than the sum of its proper divisors (236453613).

683708691 is a wasteful number, since it uses less digits than its factorization.

683708691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2810.

The product of its (nonzero) digits is 435456, while the sum is 48.

The square root of 683708691 is about 26147.8238291449. The cubic root of 683708691 is about 880.9617116060.

The spelling of 683708691 in words is "six hundred eighty-three million, seven hundred eight thousand, six hundred ninety-one".