27764131 has 2 divisors, whose sum is σ = 27764132. Its totient is φ = 27764130.

The previous prime is 27764123. The next prime is 27764137. The reversal of 27764131 is 13146772.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27764131 - 2³ = 27764123 is a prime.

It is a super-2 number, since 2×27764131² = 1541693940370322, which contains 22 as substring.

It is equal to p_1727707 and since 27764131 and 1727707 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 27764093 and 27764102.

It is not a weakly prime, because it can be changed into another prime (27764137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13882065 + 13882066.

It is an arithmetic number, because the mean of its divisors is an integer number (13882066).

Almost surely, 2^27764131 is an apocalyptic number.

27764131 is a deficient number, since it is larger than the sum of its proper divisors (1).

27764131 is an equidigital number, since it uses as much as digits as its factorization.

27764131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7056, while the sum is 31.

The square root of 27764131 is about 5269.1679608834. The cubic root of 27764131 is about 302.8038283328.

The spelling of 27764131 in words is "twenty-seven million, seven hundred sixty-four thousand, one hundred thirty-one".