27698413 has 2 divisors, whose sum is σ = 27698414. Its totient is φ = 27698412.

The previous prime is 27698401. The next prime is 27698441. The reversal of 27698413 is 31489672.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22306729 + 5391684 = 4723^2 + 2322^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27698413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27698443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13849206 + 13849207.

It is an arithmetic number, because the mean of its divisors is an integer number (13849207).

Almost surely, 2^27698413 is an apocalyptic number.

It is an amenable number.

27698413 is a deficient number, since it is larger than the sum of its proper divisors (1).

27698413 is an equidigital number, since it uses as much as digits as its factorization.

27698413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 40.

The square root of 27698413 is about 5262.9281773553. The cubic root of 27698413 is about 302.5647262628.

It can be divided in two parts, 276 and 98413, that added together give a palindrome (98689).

The spelling of 27698413 in words is "twenty-seven million, six hundred ninety-eight thousand, four hundred thirteen".