27597013 has 4 divisors (see below), whose sum is σ = 28238848. Its totient is φ = 26955180.

The previous prime is 27597007. The next prime is 27597023. The reversal of 27597013 is 31079572.

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 27597013 - 2²¹ = 25499861 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27597013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27597023) 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, 320853 + ... + 320938.

It is an arithmetic number, because the mean of its divisors is an integer number (7059712).

Almost surely, 2^27597013 is an apocalyptic number.

It is an amenable number.

27597013 is a deficient number, since it is larger than the sum of its proper divisors (641835).

27597013 is an equidigital number, since it uses as much as digits as its factorization.

27597013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641834.

The product of its (nonzero) digits is 13230, while the sum is 34.

The square root of 27597013 is about 5253.2859240670. The cubic root of 27597013 is about 302.1950591386.

The spelling of 27597013 in words is "twenty-seven million, five hundred ninety-seven thousand, thirteen".