681006924 has 36 divisors (see below), whose sum is σ = 1853853456. Its totient is φ = 209540448.

The previous prime is 681006919. The next prime is 681006929. The reversal of 681006924 is 429600186.

681006924 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (681006919) and next prime (681006929).

It is a tau number, because it is divible by the number of its divisors (36).

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 (681006929) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 727104 + ... + 728039.

Almost surely, 2^681006924 is an apocalyptic number.

It is an amenable number.

681006924 is an abundant number, since it is smaller than the sum of its proper divisors (1172846532).

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

681006924 is a wasteful number, since it uses less digits than its factorization.

681006924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1455166 (or 1455161 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 681006924 is about 26096.1093651908. The cubic root of 681006924 is about 879.7997667707.

The spelling of 681006924 in words is "six hundred eighty-one million, six thousand, nine hundred twenty-four".