681044732 has 12 divisors (see below), whose sum is σ = 1205220240. Its totient is φ = 336696096.

The previous prime is 681044731. The next prime is 681044761. The reversal of 681044732 is 237440186.

It is a junction number, because it is equal to n+sod(n) for n = 681044692 and 681044701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681044731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 956168 + ... + 956879.

It is an arithmetic number, because the mean of its divisors is an integer number (100435020).

Almost surely, 2^681044732 is an apocalyptic number.

It is an amenable number.

681044732 is a deficient number, since it is larger than the sum of its proper divisors (524175508).

681044732 is a wasteful number, since it uses less digits than its factorization.

681044732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1913140 (or 1913138 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 681044732 is about 26096.8337543082. The cubic root of 681044732 is about 879.8160479825.

The spelling of 681044732 in words is "six hundred eighty-one million, forty-four thousand, seven hundred thirty-two".