681874834 has 16 divisors (see below), whose sum is σ = 1036188288. Its totient is φ = 336502512.

The previous prime is 681874807. The next prime is 681874867. The reversal of 681874834 is 438478186.

It is a happy 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, 53527 + ... + 65029.

It is an arithmetic number, because the mean of its divisors is an integer number (64761768).

Almost surely, 2^681874834 is an apocalyptic number.

681874834 is a deficient number, since it is larger than the sum of its proper divisors (354313454).

681874834 is a wasteful number, since it uses less digits than its factorization.

681874834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11889.

The product of its digits is 1032192, while the sum is 49.

The square root of 681874834 is about 26112.7331775132. The cubic root of 681874834 is about 880.1733620227.

The spelling of 681874834 in words is "six hundred eighty-one million, eight hundred seventy-four thousand, eight hundred thirty-four".