27564081 has 8 divisors (see below), whose sum is σ = 37445760. Its totient is φ = 18029232.

The previous prime is 27564077. The next prime is 27564083. The reversal of 27564081 is 18046572.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 27564081 - 2² = 27564077 is a prime.

It is a super-2 number, since 2×27564081² = 1519557122749122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27564083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86521 + ... + 86838.

It is an arithmetic number, because the mean of its divisors is an integer number (4680720).

Almost surely, 2^27564081 is an apocalyptic number.

It is an amenable number.

27564081 is a deficient number, since it is larger than the sum of its proper divisors (9881679).

27564081 is a wasteful number, since it uses less digits than its factorization.

27564081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173415.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 27564081 is about 5250.1505692694. The cubic root of 27564081 is about 302.0748064033.

The spelling of 27564081 in words is "twenty-seven million, five hundred sixty-four thousand, eighty-one".