682807691 has 4 divisors (see below), whose sum is σ = 684429984. Its totient is φ = 681185400.

The previous prime is 682807667. The next prime is 682807747. The reversal of 682807691 is 196708286.

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 682807691 - 2⁶ = 682807627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (682887691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 810515 + ... + 811356.

It is an arithmetic number, because the mean of its divisors is an integer number (171107496).

Almost surely, 2^682807691 is an apocalyptic number.

682807691 is a deficient number, since it is larger than the sum of its proper divisors (1622293).

682807691 is a wasteful number, since it uses less digits than its factorization.

682807691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1622292.

The product of its (nonzero) digits is 290304, while the sum is 47.

The square root of 682807691 is about 26130.5891820296. The cubic root of 682807691 is about 880.5745606464.

The spelling of 682807691 in words is "six hundred eighty-two million, eight hundred seven thousand, six hundred ninety-one".