26671664 has 20 divisors (see below), whose sum is σ = 52332960. Its totient is φ = 13166400.

The previous prime is 26671661. The next prime is 26671679. The reversal of 26671664 is 46617662.

It is a super-2 number, since 2×26671664² = 1422755321057792, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26671661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9287 + ... + 11814.

It is an arithmetic number, because the mean of its divisors is an integer number (2616648).

Almost surely, 2^26671664 is an apocalyptic number.

It is an amenable number.

26671664 is a deficient number, since it is larger than the sum of its proper divisors (25661296).

26671664 is a wasteful number, since it uses less digits than its factorization.

26671664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21188 (or 21182 counting only the distinct ones).

The product of its digits is 72576, while the sum is 38.

The square root of 26671664 is about 5164.4616369957. The cubic root of 26671664 is about 298.7789778326.

The spelling of 26671664 in words is "twenty-six million, six hundred seventy-one thousand, six hundred sixty-four".