27964693 has 2 divisors, whose sum is σ = 27964694. Its totient is φ = 27964692.

The previous prime is 27964691. The next prime is 27964723. The reversal of 27964693 is 39646972.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20958084 + 7006609 = 4578^2 + 2647^2 .

It is a cyclic number.

It is not a de Polignac number, because 27964693 - 2¹ = 27964691 is a prime.

Together with 27964691, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27964691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13982346 + 13982347.

It is an arithmetic number, because the mean of its divisors is an integer number (13982347).

Almost surely, 2^27964693 is an apocalyptic number.

It is an amenable number.

27964693 is a deficient number, since it is larger than the sum of its proper divisors (1).

27964693 is an equidigital number, since it uses as much as digits as its factorization.

27964693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 46.

The square root of 27964693 is about 5288.1653718468. The cubic root of 27964693 is about 303.5312091610.

The spelling of 27964693 in words is "twenty-seven million, nine hundred sixty-four thousand, six hundred ninety-three".