26666664 has 32 divisors (see below), whose sum is σ = 66960000. Its totient is φ = 8849792.

The previous prime is 26666663. The next prime is 26666669. The reversal of 26666664 is 46666662.

It is a happy number.

It is a super-2 number, since 2×26666664² = 1422221937777792, which contains 22 as substring.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (26666663) 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 7 ways as a sum of consecutive naturals, for example, 3412 + ... + 8060.

It is an arithmetic number, because the mean of its divisors is an integer number (2092500).

Almost surely, 2^26666664 is an apocalyptic number.

26666664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

26666664 is an abundant number, since it is smaller than the sum of its proper divisors (40293336).

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

26666664 is a wasteful number, since it uses less digits than its factorization.

26666664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4897 (or 4893 counting only the distinct ones).

The product of its digits is 373248, while the sum is 42.

The square root of 26666664 is about 5163.9775367443. The cubic root of 26666664 is about 298.7603064785.

It can be divided in two parts, 2 and 6666664, that added together give a palindrome (6666666).

The spelling of 26666664 in words is "twenty-six million, six hundred sixty-six thousand, six hundred sixty-four".