27628693 has 2 divisors, whose sum is σ = 27628694. Its totient is φ = 27628692.

The previous prime is 27628649. The next prime is 27628709. The reversal of 27628693 is 39682672.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17247409 + 10381284 = 4153^2 + 3222^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27628693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27628633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13814346 + 13814347.

It is an arithmetic number, because the mean of its divisors is an integer number (13814347).

Almost surely, 2^27628693 is an apocalyptic number.

It is an amenable number.

27628693 is a deficient number, since it is larger than the sum of its proper divisors (1).

27628693 is an equidigital number, since it uses as much as digits as its factorization.

27628693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 43.

The square root of 27628693 is about 5256.3003148603. The cubic root of 27628693 is about 302.3106498910.

The spelling of 27628693 in words is "twenty-seven million, six hundred twenty-eight thousand, six hundred ninety-three".