680617088 has 64 divisors (see below), whose sum is σ = 1448930400. Its totient is φ = 317509632.

The previous prime is 680617079. The next prime is 680617103. The reversal of 680617088 is 880716086.

It is a tau number, because it is divible by the number of its divisors (64).

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

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, 160856 + ... + 165032.

Almost surely, 2^680617088 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 680617088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (724465200).

680617088 is an abundant number, since it is smaller than the sum of its proper divisors (768313312).

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

680617088 is a wasteful number, since it uses less digits than its factorization.

680617088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4277 (or 4265 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 44.

The square root of 680617088 is about 26088.6390599433. The cubic root of 680617088 is about 879.6318570303.

The spelling of 680617088 in words is "six hundred eighty million, six hundred seventeen thousand, eighty-eight".