681582880 has 48 divisors (see below), whose sum is σ = 1756629504. Its totient is φ = 247847680.

The previous prime is 681582871. The next prime is 681582907. The reversal of 681582880 is 88285186.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 681582880.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191872 + ... + 195391.

It is an arithmetic number, because the mean of its divisors is an integer number (36596448).

Almost surely, 2^681582880 is an apocalyptic number.

It is an amenable number.

681582880 is an abundant number, since it is smaller than the sum of its proper divisors (1075046624).

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

681582880 is a wasteful number, since it uses less digits than its factorization.

681582880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387289 (or 387281 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 46.

The square root of 681582880 is about 26107.1423177643. The cubic root of 681582880 is about 880.0477246844.

The spelling of 681582880 in words is "six hundred eighty-one million, five hundred eighty-two thousand, eight hundred eighty".