681434480 has 40 divisors (see below), whose sum is σ = 1591481472. Its totient is φ = 271344384.

The previous prime is 681434471. The next prime is 681434521. The reversal of 681434480 is 84434186.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1259 + ... + 36938.

Almost surely, 2^681434480 is an apocalyptic number.

It is an amenable number.

681434480 is an abundant number, since it is smaller than the sum of its proper divisors (910046992).

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

681434480 is a wasteful number, since it uses less digits than its factorization.

681434480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38433 (or 38427 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 38.

The square root of 681434480 is about 26104.3000289224. The cubic root of 681434480 is about 879.9838495659.

The spelling of 681434480 in words is "six hundred eighty-one million, four hundred thirty-four thousand, four hundred eighty".