27764137 has 2 divisors, whose sum is σ = 27764138. Its totient is φ = 27764136.

The previous prime is 27764131. The next prime is 27764141. The reversal of 27764137 is 73146772.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21307456 + 6456681 = 4616^2 + 2541^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27764137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27764096 and 27764105.

It is not a weakly prime, because it can be changed into another prime (27764131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13882068 + 13882069.

It is an arithmetic number, because the mean of its divisors is an integer number (13882069).

Almost surely, 2^27764137 is an apocalyptic number.

It is an amenable number.

27764137 is a deficient number, since it is larger than the sum of its proper divisors (1).

27764137 is an equidigital number, since it uses as much as digits as its factorization.

27764137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 49392, while the sum is 37.

The square root of 27764137 is about 5269.1685302332. The cubic root of 27764137 is about 302.8038501454.

The spelling of 27764137 in words is "twenty-seven million, seven hundred sixty-four thousand, one hundred thirty-seven".