27968761 has 2 divisors, whose sum is σ = 27968762. Its totient is φ = 27968760.

The previous prime is 27968747. The next prime is 27968767. The reversal of 27968761 is 16786972.

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., 27499536 + 469225 = 5244^2 + 685^2 .

It is a cyclic number.

It is not a de Polignac number, because 27968761 - 2⁵ = 27968729 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27968767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13984380 + 13984381.

It is an arithmetic number, because the mean of its divisors is an integer number (13984381).

Almost surely, 2^27968761 is an apocalyptic number.

It is an amenable number.

27968761 is a deficient number, since it is larger than the sum of its proper divisors (1).

27968761 is an equidigital number, since it uses as much as digits as its factorization.

27968761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 46.

The square root of 27968761 is about 5288.5499903093. The cubic root of 27968761 is about 303.5459265893.

The spelling of 27968761 in words is "twenty-seven million, nine hundred sixty-eight thousand, seven hundred sixty-one".