681047952 has 80 divisors (see below), whose sum is σ = 1920793728. Its totient is φ = 206668800.

The previous prime is 681047929. The next prime is 681047957. The reversal of 681047952 is 259740186.

It is not an unprimeable number, because it can be changed into a prime (681047957) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38077 + ... + 53027.

Almost surely, 2^681047952 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 681047952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (960396864).

681047952 is an abundant number, since it is smaller than the sum of its proper divisors (1239745776).

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

681047952 is a wasteful number, since it uses less digits than its factorization.

681047952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15048 (or 15042 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 681047952 is about 26096.8954475432. The cubic root of 681047952 is about 879.8174345793.

The spelling of 681047952 in words is "six hundred eighty-one million, forty-seven thousand, nine hundred fifty-two".