681335364 has 48 divisors (see below), whose sum is σ = 1675950080. Its totient is φ = 214837920.

The previous prime is 681335351. The next prime is 681335377. The reversal of 681335364 is 463533186.

It is an interprime number because it is at equal distance from previous prime (681335351) and next prime (681335377).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185829 + ... + 189459.

Almost surely, 2^681335364 is an apocalyptic number.

It is an amenable number.

681335364 is an abundant number, since it is smaller than the sum of its proper divisors (994614716).

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

681335364 is a wasteful number, since it uses less digits than its factorization.

681335364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4480 (or 4478 counting only the distinct ones).

The product of its digits is 155520, while the sum is 39.

The square root of 681335364 is about 26102.4014987127. The cubic root of 681335364 is about 879.9411823636.

The spelling of 681335364 in words is "six hundred eighty-one million, three hundred thirty-five thousand, three hundred sixty-four".