682680891 has 4 divisors (see below), whose sum is σ = 910241192. Its totient is φ = 455120592.

The previous prime is 682680881. The next prime is 682680931. The reversal of 682680891 is 198086286.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 682680891 - 2⁹ = 682680379 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 682680891.

It is not an unprimeable number, because it can be changed into a prime (682680881) 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, 113780146 + ... + 113780151.

It is an arithmetic number, because the mean of its divisors is an integer number (227560298).

Almost surely, 2^682680891 is an apocalyptic number.

682680891 is a deficient number, since it is larger than the sum of its proper divisors (227560301).

682680891 is a wasteful number, since it uses less digits than its factorization.

682680891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227560300.

The product of its (nonzero) digits is 331776, while the sum is 48.

The square root of 682680891 is about 26128.1627941958. The cubic root of 682680891 is about 880.5200485838.

The spelling of 682680891 in words is "six hundred eighty-two million, six hundred eighty thousand, eight hundred ninety-one".