11566990 has 8 divisors (see below), whose sum is σ = 20820600. Its totient is φ = 4626792.

The previous prime is 11566949. The next prime is 11566993. The reversal of 11566990 is 9966511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11566993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 578340 + ... + 578359.

It is an arithmetic number, because the mean of its divisors is an integer number (2602575).

Almost surely, 2^11566990 is an apocalyptic number.

11566990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11566990 is a deficient number, since it is larger than the sum of its proper divisors (9253610).

11566990 is a wasteful number, since it uses less digits than its factorization.

11566990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1156706.

The product of its (nonzero) digits is 14580, while the sum is 37.

The square root of 11566990 is about 3401.0277858318. The cubic root of 11566990 is about 226.1553087057.

The spelling of 11566990 in words is "eleven million, five hundred sixty-six thousand, nine hundred ninety".