618680 has 16 divisors (see below), whose sum is σ = 1392120. Its totient is φ = 247456.

The previous prime is 618679. The next prime is 618703. The reversal of 618680 is 86816.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7694 + ... + 7773.

2⁶¹⁸⁶⁸⁰ is an apocalyptic number.

It is an amenable number.

618680 is an abundant number, since it is smaller than the sum of its proper divisors (773440).

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

618680 is a wasteful number, since it uses less digits than its factorization.

618680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15478 (or 15474 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 618680 is about 786.5621399483. The cubic root of 618680 is about 85.2096325080.

The spelling of 618680 in words is "six hundred eighteen thousand, six hundred eighty".