11666787 has 32 divisors (see below), whose sum is σ = 17902080. Its totient is φ = 6693120.

The previous prime is 11666749. The next prime is 11666797. The reversal of 11666787 is 78766611.

It is not a de Polignac number, because 11666787 - 2¹⁰ = 11665763 is a prime.

It is a super-2 number, since 2×11666787² = 272227837806738, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11666737) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69778 + ... + 69944.

It is an arithmetic number, because the mean of its divisors is an integer number (559440).

Almost surely, 2^11666787 is an apocalyptic number.

11666787 is a deficient number, since it is larger than the sum of its proper divisors (6235293).

11666787 is a wasteful number, since it uses less digits than its factorization.

11666787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283.

The product of its digits is 84672, while the sum is 42.

The square root of 11666787 is about 3415.6678702708. The cubic root of 11666787 is about 226.8038502997.

The spelling of 11666787 in words is "eleven million, six hundred sixty-six thousand, seven hundred eighty-seven".