27712913 has 2 divisors, whose sum is σ = 27712914. Its totient is φ = 27712912.

The previous prime is 27712903. The next prime is 27712921. The reversal of 27712913 is 31921772.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16908544 + 10804369 = 4112^2 + 3287^2 .

It is a cyclic number.

It is not a de Polignac number, because 27712913 - 2⁴ = 27712897 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 27712913.

It is not a weakly prime, because it can be changed into another prime (27712903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13856456 + 13856457.

It is an arithmetic number, because the mean of its divisors is an integer number (13856457).

Almost surely, 2^27712913 is an apocalyptic number.

It is an amenable number.

27712913 is a deficient number, since it is larger than the sum of its proper divisors (1).

27712913 is an equidigital number, since it uses as much as digits as its factorization.

27712913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5292, while the sum is 32.

The square root of 27712913 is about 5264.3055572411. The cubic root of 27712913 is about 302.6175141632.

The spelling of 27712913 in words is "twenty-seven million, seven hundred twelve thousand, nine hundred thirteen".