681789360 has 80 divisors (see below), whose sum is σ = 2415488256. Its totient is φ = 155837184.

The previous prime is 681789349. The next prime is 681789371. The reversal of 681789360 is 63987186.

It is an interprime number because it is at equal distance from previous prime (681789349) and next prime (681789371).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 201234 + ... + 204593.

Almost surely, 2^681789360 is an apocalyptic number.

681789360 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

681789360 is an abundant number, since it is smaller than the sum of its proper divisors (1733698896).

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

681789360 is a wasteful number, since it uses less digits than its factorization.

681789360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405850 (or 405844 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 48.

The square root of 681789360 is about 26111.0964917217. The cubic root of 681789360 is about 880.1365834832.

The spelling of 681789360 in words is "six hundred eighty-one million, seven hundred eighty-nine thousand, three hundred sixty".