681465324 has 48 divisors (see below), whose sum is σ = 1676505600. Its totient is φ = 214848576.

The previous prime is 681465227. The next prime is 681465329. The reversal of 681465324 is 423564186.

It is not an unprimeable number, because it can be changed into a prime (681465329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161854 + ... + 166010.

It is an arithmetic number, because the mean of its divisors is an integer number (34927200).

Almost surely, 2^681465324 is an apocalyptic number.

It is an amenable number.

681465324 is an abundant number, since it is smaller than the sum of its proper divisors (995040276).

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

681465324 is a wasteful number, since it uses less digits than its factorization.

681465324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4902 (or 4900 counting only the distinct ones).

The product of its digits is 138240, while the sum is 39.

The square root of 681465324 is about 26104.8908061306. The cubic root of 681465324 is about 879.9971263680.

The spelling of 681465324 in words is "six hundred eighty-one million, four hundred sixty-five thousand, three hundred twenty-four".