8618660 has 24 divisors (see below), whose sum is σ = 19164600. Its totient is φ = 3244544.

The previous prime is 8618639. The next prime is 8618681. The reversal of 8618660 is 668168.

It is an interprime number because it is at equal distance from previous prime (8618639) and next prime (8618681).

It can be written as a sum of positive squares in 4 ways, for example, as 1350244 + 7268416 = 1162^2 + 2696^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 8618660.

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, 12335 + ... + 13014.

It is an arithmetic number, because the mean of its divisors is an integer number (798525).

Almost surely, 2^8618660 is an apocalyptic number.

It is an amenable number.

8618660 is an abundant number, since it is smaller than the sum of its proper divisors (10545940).

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

8618660 is a wasteful number, since it uses less digits than its factorization.

8618660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25375 (or 25373 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 8618660 is about 2935.7554394057. The cubic root of 8618660 is about 205.0280350316.

The spelling of 8618660 in words is "eight million, six hundred eighteen thousand, six hundred sixty".