8685880 has 64 divisors (see below), whose sum is σ = 22717440. Its totient is φ = 2927232.

The previous prime is 8685863. The next prime is 8685893. The reversal of 8685880 is 885868.

8685880 = T₈₉₉ + T₉₀₀ + ... + T₉₁₉.

It is a super-2 number, since 2×8685880² = 150889022748800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18529 + ... + 18991.

It is an arithmetic number, because the mean of its divisors is an integer number (354960).

Almost surely, 2^8685880 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 8685880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11358720).

8685880 is an abundant number, since it is smaller than the sum of its proper divisors (14031560).

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

8685880 is a wasteful number, since it uses less digits than its factorization.

8685880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548 (or 544 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 43.

The square root of 8685880 is about 2947.1817046121. The cubic root of 8685880 is about 205.5596841418.

The spelling of 8685880 in words is "eight million, six hundred eighty-five thousand, eight hundred eighty".