26664628 has 6 divisors (see below), whose sum is σ = 46663106. Its totient is φ = 13332312.

The previous prime is 26664623. The next prime is 26664629. The reversal of 26664628 is 82646662.

It can be written as a sum of positive squares in only one way, i.e., 25928464 + 736164 = 5092^2 + 858^2 .

It is a super-2 number, since 2×26664628² = 1422004772756768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26664623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3333075 + ... + 3333082.

Almost surely, 2^26664628 is an apocalyptic number.

It is an amenable number.

26664628 is a deficient number, since it is larger than the sum of its proper divisors (19998478).

26664628 is a wasteful number, since it uses less digits than its factorization.

26664628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6666161 (or 6666159 counting only the distinct ones).

The product of its digits is 165888, while the sum is 40.

The square root of 26664628 is about 5163.7803981192. The cubic root of 26664628 is about 298.7527028344.

The spelling of 26664628 in words is "twenty-six million, six hundred sixty-four thousand, six hundred twenty-eight".