681896352 has 48 divisors (see below), whose sum is σ = 1791472032. Its totient is φ = 227109120.

The previous prime is 681896311. The next prime is 681896363. The reversal of 681896352 is 253698186.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 157902 + ... + 162162.

It is an arithmetic number, because the mean of its divisors is an integer number (37322334).

Almost surely, 2^681896352 is an apocalyptic number.

It is an amenable number.

681896352 is an abundant number, since it is smaller than the sum of its proper divisors (1109575680).

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

681896352 is a wasteful number, since it uses less digits than its factorization.

681896352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5941 (or 5933 counting only the distinct ones).

The product of its digits is 622080, while the sum is 48.

The square root of 681896352 is about 26113.1451954758. The cubic root of 681896352 is about 880.1826205016.

The spelling of 681896352 in words is "six hundred eighty-one million, eight hundred ninety-six thousand, three hundred fifty-two".