26664668 has 6 divisors (see below), whose sum is σ = 46663176. Its totient is φ = 13332332.

The previous prime is 26664643. The next prime is 26664683. The reversal of 26664668 is 86646662.

It is a super-2 number, since 2×26664668² = 1422009039100448, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3333080 + ... + 3333087.

It is an arithmetic number, because the mean of its divisors is an integer number (7777196).

Almost surely, 2^26664668 is an apocalyptic number.

It is an amenable number.

26664668 is a deficient number, since it is larger than the sum of its proper divisors (19998508).

26664668 is a wasteful number, since it uses less digits than its factorization.

26664668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6666171 (or 6666169 counting only the distinct ones).

The product of its digits is 497664, while the sum is 44.

The square root of 26664668 is about 5163.7842712491. The cubic root of 26664668 is about 298.7528522221.

The spelling of 26664668 in words is "twenty-six million, six hundred sixty-four thousand, six hundred sixty-eight".