681590003904 has 84 divisors (see below), whose sum is σ = 1954621845384. Its totient is φ = 227084193792.

The previous prime is 681590003903. The next prime is 681590003929. The reversal of 681590003904 is 409300095186.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 681590003904.

It is not an unprimeable number, because it can be changed into a prime (681590003903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 875664 + ... + 1459440.

Almost surely, 2^681590003904 is an apocalyptic number.

681590003904 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

681590003904 is an abundant number, since it is smaller than the sum of its proper divisors (1273031841480).

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

681590003904 is a wasteful number, since it uses less digits than its factorization.

681590003904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585822 (or 585809 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The spelling of 681590003904 in words is "six hundred eighty-one billion, five hundred ninety million, three thousand, nine hundred four".