11859660 has 72 divisors (see below), whose sum is σ = 36874656. Its totient is φ = 3083520.

The previous prime is 11859643. The next prime is 11859707. The reversal of 11859660 is 6695811.

11859660 is a `hidden beast` number, since 1 + 1 + 8 + 596 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6577 + ... + 8183.

It is an arithmetic number, because the mean of its divisors is an integer number (512148).

Almost surely, 2^11859660 is an apocalyptic number.

11859660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11859660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18437328).

11859660 is an abundant number, since it is smaller than the sum of its proper divisors (25014996).

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

11859660 is a wasteful number, since it uses less digits than its factorization.

11859660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1663 (or 1658 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 11859660 is about 3443.7857076189. The cubic root of 11859660 is about 228.0468509446.

The spelling of 11859660 in words is "eleven million, eight hundred fifty-nine thousand, six hundred sixty".