11591660 has 12 divisors (see below), whose sum is σ = 24342528. Its totient is φ = 4636656.

The previous prime is 11591659. The next prime is 11591681. The reversal of 11591660 is 6619511.

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, 289772 + ... + 289811.

It is an arithmetic number, because the mean of its divisors is an integer number (2028544).

Almost surely, 2^11591660 is an apocalyptic number.

11591660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11591660 is an abundant number, since it is smaller than the sum of its proper divisors (12750868).

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

11591660 is a wasteful number, since it uses less digits than its factorization.

11591660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579592 (or 579590 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 29.

The square root of 11591660 is about 3404.6526988813. The cubic root of 11591660 is about 226.3159753872.

The spelling of 11591660 in words is "eleven million, five hundred ninety-one thousand, six hundred sixty".