681473934 has 48 divisors (see below), whose sum is σ = 1565600400. Its totient is φ = 213492480.

The previous prime is 681473911. The next prime is 681473977. The reversal of 681473934 is 439374186.

It is a self number, because there is not a number n which added to its sum of digits gives 681473934.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 323617 + ... + 325715.

It is an arithmetic number, because the mean of its divisors is an integer number (32616675).

Almost surely, 2^681473934 is an apocalyptic number.

681473934 is an abundant number, since it is smaller than the sum of its proper divisors (884126466).

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

681473934 is a wasteful number, since it uses less digits than its factorization.

681473934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3185 (or 3182 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 681473934 is about 26105.0557172361. The cubic root of 681473934 is about 880.0008324717. Note that the first 3 decimals are identical.

The spelling of 681473934 in words is "six hundred eighty-one million, four hundred seventy-three thousand, nine hundred thirty-four".