27223666 has 4 divisors (see below), whose sum is σ = 40835502. Its totient is φ = 13611832.

The previous prime is 27223657. The next prime is 27223709. The reversal of 27223666 is 66632272.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16524225 + 10699441 = 4065^2 + 3271^2 .

It is a super-2 number, since 2×27223666² = 1482255980959112, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6805915 + ... + 6805918.

Almost surely, 2^27223666 is an apocalyptic number.

27223666 is a deficient number, since it is larger than the sum of its proper divisors (13611836).

27223666 is a wasteful number, since it uses less digits than its factorization.

27223666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13611835.

The product of its digits is 36288, while the sum is 34.

The square root of 27223666 is about 5217.6303050331. The cubic root of 27223666 is about 300.8261156144.

It can be divided in two parts, 27223 and 666, that added together give a square (27889 = 167²).

The spelling of 27223666 in words is "twenty-seven million, two hundred twenty-three thousand, six hundred sixty-six".