681494600 has 48 divisors (see below), whose sum is σ = 1653376320. Its totient is φ = 260744000.

The previous prime is 681494599. The next prime is 681494683. The reversal of 681494600 is 6494186.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69476 + ... + 78675.

It is an arithmetic number, because the mean of its divisors is an integer number (34445340).

Almost surely, 2^681494600 is an apocalyptic number.

It is an amenable number.

681494600 is an abundant number, since it is smaller than the sum of its proper divisors (971881720).

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

681494600 is a wasteful number, since it uses less digits than its factorization.

681494600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148190 (or 148181 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 681494600 is about 26105.4515379451. The cubic root of 681494600 is about 880.0097278539.

The spelling of 681494600 in words is "six hundred eighty-one million, four hundred ninety-four thousand, six hundred".