11668643 has 16 divisors (see below), whose sum is σ = 14100480. Its totient is φ = 9443616.

The previous prime is 11668619. The next prime is 11668661. The reversal of 11668643 is 34686611.

It is not a de Polignac number, because 11668643 - 2⁸ = 11668387 is a prime.

It is a super-2 number, since 2×11668643² = 272314458922898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11668673) 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, 8930 + ... + 10152.

It is an arithmetic number, because the mean of its divisors is an integer number (881280).

Almost surely, 2^11668643 is an apocalyptic number.

11668643 is a deficient number, since it is larger than the sum of its proper divisors (2431837).

11668643 is a wasteful number, since it uses less digits than its factorization.

11668643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306.

The product of its digits is 20736, while the sum is 35.

The square root of 11668643 is about 3415.9395486454. The cubic root of 11668643 is about 226.8158766221.

The spelling of 11668643 in words is "eleven million, six hundred sixty-eight thousand, six hundred forty-three".