681439314 has 16 divisors (see below), whose sum is σ = 1364746752. Its totient is φ = 226835088.

The previous prime is 681439277. The next prime is 681439403. The reversal of 681439314 is 413934186.

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, 73074 + ... + 81869.

It is an arithmetic number, because the mean of its divisors is an integer number (85296672).

Almost surely, 2^681439314 is an apocalyptic number.

681439314 is an abundant number, since it is smaller than the sum of its proper divisors (683307438).

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

681439314 is a wasteful number, since it uses less digits than its factorization.

681439314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155681.

The product of its digits is 62208, while the sum is 39.

The square root of 681439314 is about 26104.3926188678. The cubic root of 681439314 is about 879.9859303880.

The spelling of 681439314 in words is "six hundred eighty-one million, four hundred thirty-nine thousand, three hundred fourteen".