681735376 has 40 divisors (see below), whose sum is σ = 1541687040. Its totient is φ = 285953664.

The previous prime is 681735367. The next prime is 681735403. The reversal of 681735376 is 673537186.

It is a super-2 number, since 2×681735376² = 929526245779722752, which contains 22 as substring.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

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, 59491 + ... + 70018.

It is an arithmetic number, because the mean of its divisors is an integer number (38542176).

Almost surely, 2^681735376 is an apocalyptic number.

It is an amenable number.

681735376 is an abundant number, since it is smaller than the sum of its proper divisors (859951664).

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

681735376 is a wasteful number, since it uses less digits than its factorization.

681735376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129571 (or 129565 counting only the distinct ones).

The product of its digits is 635040, while the sum is 46.

The square root of 681735376 is about 26110.0627345091. The cubic root of 681735376 is about 880.1133531669.

The spelling of 681735376 in words is "six hundred eighty-one million, seven hundred thirty-five thousand, three hundred seventy-six".