681501360 has 40 divisors (see below), whose sum is σ = 2112654960. Its totient is φ = 181733632.

The previous prime is 681501341. The next prime is 681501383. The reversal of 681501360 is 63105186.

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

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 1419555 + ... + 1420034.

It is an arithmetic number, because the mean of its divisors is an integer number (52816374).

Almost surely, 2^681501360 is an apocalyptic number.

681501360 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

681501360 is an abundant number, since it is smaller than the sum of its proper divisors (1431153600).

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

681501360 is a wasteful number, since it uses less digits than its factorization.

681501360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2839605 (or 2839599 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 681501360 is about 26105.5810124962. The cubic root of 681501360 is about 880.0126375596.

The spelling of 681501360 in words is "six hundred eighty-one million, five hundred one thousand, three hundred sixty".