27364721 has 4 divisors (see below), whose sum is σ = 27573744. Its totient is φ = 27155700.

The previous prime is 27364717. The next prime is 27364759. The reversal of 27364721 is 12746372.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27364721 - 2² = 27364717 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27367721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104315 + ... + 104576.

It is an arithmetic number, because the mean of its divisors is an integer number (6893436).

Almost surely, 2^27364721 is an apocalyptic number.

It is an amenable number.

27364721 is a deficient number, since it is larger than the sum of its proper divisors (209023).

27364721 is a wasteful number, since it uses less digits than its factorization.

27364721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209022.

The product of its digits is 14112, while the sum is 32.

The square root of 27364721 is about 5231.1299926498. The cubic root of 27364721 is about 301.3447813880.

The spelling of 27364721 in words is "twenty-seven million, three hundred sixty-four thousand, seven hundred twenty-one".