27955693 has 2 divisors, whose sum is σ = 27955694. Its totient is φ = 27955692.

The previous prime is 27955643. The next prime is 27955699. The reversal of 27955693 is 39655972.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27899524 + 56169 = 5282^2 + 237^2 .

It is a cyclic number.

It is not a de Polignac number, because 27955693 - 2⁹ = 27955181 is a prime.

It is a super-2 number, since 2×27955693² = 1563041542220498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27955699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13977846 + 13977847.

It is an arithmetic number, because the mean of its divisors is an integer number (13977847).

Almost surely, 2^27955693 is an apocalyptic number.

It is an amenable number.

27955693 is a deficient number, since it is larger than the sum of its proper divisors (1).

27955693 is an equidigital number, since it uses as much as digits as its factorization.

27955693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 510300, while the sum is 46.

The square root of 27955693 is about 5287.3143466225. The cubic root of 27955693 is about 303.4986434064.

The spelling of 27955693 in words is "twenty-seven million, nine hundred fifty-five thousand, six hundred ninety-three".