11993664 has 28 divisors (see below), whose sum is σ = 31733744. Its totient is φ = 3997824.

The previous prime is 11993659. The next prime is 11993669. The reversal of 11993664 is 46639911.

It is an interprime number because it is at equal distance from previous prime (11993659) and next prime (11993669).

It is a super-2 number, since 2×11993664² = 287695952289792, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11993669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31042 + ... + 31425.

It is an arithmetic number, because the mean of its divisors is an integer number (1133348).

Almost surely, 2^11993664 is an apocalyptic number.

It is an amenable number.

11993664 is an abundant number, since it is smaller than the sum of its proper divisors (19740080).

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

11993664 is an equidigital number, since it uses as much as digits as its factorization.

11993664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62482 (or 62472 counting only the distinct ones).

The product of its digits is 34992, while the sum is 39.

The square root of 11993664 is about 3463.1869715625. The cubic root of 11993664 is about 228.9025474755.

The spelling of 11993664 in words is "eleven million, nine hundred ninety-three thousand, six hundred sixty-four".