27630791 has 2 divisors, whose sum is σ = 27630792. Its totient is φ = 27630790.

The previous prime is 27630773. The next prime is 27630793. The reversal of 27630791 is 19703672.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27630791 - 2⁶ = 27630727 is a prime.

It is a super-2 number, since 2×27630791² = 1526921222571362, which contains 22 as substring.

Together with 27630793, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_1719917 and since 27630791 and 1719917 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27630793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13815395 + 13815396.

It is an arithmetic number, because the mean of its divisors is an integer number (13815396).

Almost surely, 2^27630791 is an apocalyptic number.

27630791 is a deficient number, since it is larger than the sum of its proper divisors (1).

27630791 is an equidigital number, since it uses as much as digits as its factorization.

27630791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15876, while the sum is 35.

The square root of 27630791 is about 5256.4998810996. The cubic root of 27630791 is about 302.3183017392.

The spelling of 27630791 in words is "twenty-seven million, six hundred thirty thousand, seven hundred ninety-one".