11666650 has 24 divisors (see below), whose sum is σ = 21794364. Its totient is φ = 4646400.

The previous prime is 11666647. The next prime is 11666653. The reversal of 11666650 is 5666611.

It is an interprime number because it is at equal distance from previous prime (11666647) and next prime (11666653).

It can be written as a sum of positive squares in 6 ways, for example, as 5461569 + 6205081 = 2337^2 + 2491^2 .

It is a super-2 number, since 2×11666650² = 272221444445000, which contains 22 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (11666653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17320 + ... + 17980.

Almost surely, 2^11666650 is an apocalyptic number.

11666650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11666650 is a deficient number, since it is larger than the sum of its proper divisors (10127714).

11666650 is a wasteful number, since it uses less digits than its factorization.

11666650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026 (or 1021 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 11666650 is about 3415.6478155688. The cubic root of 11666650 is about 226.8029625303.

It can be divided in two parts, 116 and 66650, that added together give a palindrome (66766).

The spelling of 11666650 in words is "eleven million, six hundred sixty-six thousand, six hundred fifty".