27993601 has 2 divisors, whose sum is σ = 27993602. Its totient is φ = 27993600.

The previous prime is 27993587. The next prime is 27993619. The reversal of 27993601 is 10639972.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20976400 + 7017201 = 4580^2 + 2649^2 .

It is a cyclic number.

It is not a de Polignac number, because 27993601 - 2⁹ = 27993089 is a prime.

It is not a weakly prime, because it can be changed into another prime (27993701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13996800 + 13996801.

It is an arithmetic number, because the mean of its divisors is an integer number (13996801).

Almost surely, 2^27993601 is an apocalyptic number.

It is an amenable number.

27993601 is a deficient number, since it is larger than the sum of its proper divisors (1).

27993601 is an equidigital number, since it uses as much as digits as its factorization.

27993601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 27993601 is about 5290.8979389136. The cubic root of 27993601 is about 303.6357631242.

It can be divided in two parts, 2799 and 3601, that added together give a square (6400 = 80²).

The spelling of 27993601 in words is "twenty-seven million, nine hundred ninety-three thousand, six hundred one".