681504048 has 30 divisors (see below), whose sum is σ = 1907265204. Its totient is φ = 227167968.

The previous prime is 681504023. The next prime is 681504049. The reversal of 681504048 is 840405186.

681504048 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (681504049) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2366190 + ... + 2366477.

Almost surely, 2^681504048 is an apocalyptic number.

It is an amenable number.

681504048 is an abundant number, since it is smaller than the sum of its proper divisors (1225761156).

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

681504048 is a wasteful number, since it uses less digits than its factorization.

681504048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4732681 (or 4732672 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 681504048 is about 26105.6324956895. The cubic root of 681504048 is about 880.0137945496.

The spelling of 681504048 in words is "six hundred eighty-one million, five hundred four thousand, forty-eight".