681804480 has 224 divisors, whose sum is σ = 2510576640. Its totient is φ = 153538560.

The previous prime is 681804469. The next prime is 681804509. The reversal of 681804480 is 84408186.

It is a tau number, because it is divible by the number of its divisors (224).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 476406 + ... + 477834.

Almost surely, 2^681804480 is an apocalyptic number.

681804480 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 681804480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1255288320).

681804480 is an abundant number, since it is smaller than the sum of its proper divisors (1828772160).

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

681804480 is a wasteful number, since it uses less digits than its factorization.

681804480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1527 (or 1517 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 39.

The square root of 681804480 is about 26111.3860221935. The cubic root of 681804480 is about 880.1430896797.

The spelling of 681804480 in words is "six hundred eighty-one million, eight hundred four thousand, four hundred eighty".