11665020 has 48 divisors (see below), whose sum is σ = 32810400. Its totient is φ = 3096576.

The previous prime is 11665013. The next prime is 11665037. The reversal of 11665020 is 2056611.

It is a happy number.

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, 25756 + ... + 26204.

It is an arithmetic number, because the mean of its divisors is an integer number (683550).

Almost surely, 2^11665020 is an apocalyptic number.

11665020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11665020 is an abundant number, since it is smaller than the sum of its proper divisors (21145380).

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

11665020 is a wasteful number, since it uses less digits than its factorization.

11665020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 894 (or 892 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 11665020 is about 3415.4091994957. The cubic root of 11665020 is about 226.7923994853.

The spelling of 11665020 in words is "eleven million, six hundred sixty-five thousand, twenty".