27601 has 4 divisors (see below), whose sum is σ = 31552. Its totient is φ = 23652.

The previous prime is 27583. The next prime is 27611. The reversal of 27601 is 10672.

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 a de Polignac number, because none of the positive numbers 2^k-27601 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (27611) 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, 1965 + ... + 1978.

It is an arithmetic number, because the mean of its divisors is an integer number (7888).

2²⁷⁶⁰¹ is an apocalyptic number.

It is an amenable number.

27601 is a deficient number, since it is larger than the sum of its proper divisors (3951).

27601 is an equidigital number, since it uses as much as digits as its factorization.

27601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3950.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 27601 is about 166.1354868774. The cubic root of 27601 is about 30.2209611362.

The spelling of 27601 in words is "twenty-seven thousand, six hundred one".