27620993 has 4 divisors (see below), whose sum is σ = 27654228. Its totient is φ = 27587760.

The previous prime is 27620977. The next prime is 27621019. The reversal of 27620993 is 39902672.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8111104 + 19509889 = 2848^2 + 4417^2 .

It is a cyclic number.

It is not a de Polignac number, because 27620993 - 2⁴ = 27620977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27620933) 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, 15338 + ... + 17043.

It is an arithmetic number, because the mean of its divisors is an integer number (6913557).

Almost surely, 2^27620993 is an apocalyptic number.

It is an amenable number.

27620993 is a deficient number, since it is larger than the sum of its proper divisors (33235).

27620993 is an equidigital number, since it uses as much as digits as its factorization.

27620993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33234.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 27620993 is about 5255.5678094760. The cubic root of 27620993 is about 302.2825630480.

The spelling of 27620993 in words is "twenty-seven million, six hundred twenty thousand, nine hundred ninety-three".