2116866 has 32 divisors (see below), whose sum is σ = 4608000. Its totient is φ = 645840.

The previous prime is 2116837. The next prime is 2116867. The reversal of 2116866 is 6686112.

It is a super-2 number, since 2×2116866² = 8962243323912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2116867) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3235 + ... + 3833.

It is an arithmetic number, because the mean of its divisors is an integer number (144000).

2^2116866 is an apocalyptic number.

2116866 is an abundant number, since it is smaller than the sum of its proper divisors (2491134).

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

2116866 is a wasteful number, since it uses less digits than its factorization.

2116866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654.

The product of its digits is 3456, while the sum is 30.

The square root of 2116866 is about 1454.9453597988. The cubic root of 2116866 is about 128.3998321054.

The spelling of 2116866 in words is "two million, one hundred sixteen thousand, eight hundred sixty-six".