11551660 has 24 divisors (see below), whose sum is σ = 24776640. Its totient is φ = 4521984.

The previous prime is 11551643. The next prime is 11551679. The reversal of 11551660 is 6615511.

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, 5205 + ... + 7084.

It is an arithmetic number, because the mean of its divisors is an integer number (1032360).

Almost surely, 2^11551660 is an apocalyptic number.

11551660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11551660 is an abundant number, since it is smaller than the sum of its proper divisors (13224980).

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

11551660 is a wasteful number, since it uses less digits than its factorization.

11551660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12345 (or 12343 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 11551660 is about 3398.7733081216. The cubic root of 11551660 is about 226.0553549112.

The spelling of 11551660 in words is "eleven million, five hundred fifty-one thousand, six hundred sixty".