681926934 has 16 divisors (see below), whose sum is σ = 1468765872. Its totient is φ = 209823648.

The previous prime is 681926887. The next prime is 681926941. The reversal of 681926934 is 439629186.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4371249 + ... + 4371404.

It is an arithmetic number, because the mean of its divisors is an integer number (91797867).

Almost surely, 2^681926934 is an apocalyptic number.

681926934 is an abundant number, since it is smaller than the sum of its proper divisors (786838938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

681926934 is a wasteful number, since it uses less digits than its factorization.

681926934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8742671.

The product of its digits is 559872, while the sum is 48.

The square root of 681926934 is about 26113.7307560601. The cubic root of 681926934 is about 880.1957785827.

The spelling of 681926934 in words is "six hundred eighty-one million, nine hundred twenty-six thousand, nine hundred thirty-four".