27601969 has 2 divisors, whose sum is σ = 27601970. Its totient is φ = 27601968.

The previous prime is 27601921. The next prime is 27601991. The reversal of 27601969 is 96910672.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18601969 + 9000000 = 4313^2 + 3000^2 .

It is a cyclic number.

It is not a de Polignac number, because 27601969 - 2⁷ = 27601841 is a prime.

It is a super-2 number, since 2×27601969² = 1523737385353922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27601169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13800984 + 13800985.

It is an arithmetic number, because the mean of its divisors is an integer number (13800985).

Almost surely, 2^27601969 is an apocalyptic number.

It is an amenable number.

27601969 is a deficient number, since it is larger than the sum of its proper divisors (1).

27601969 is an equidigital number, since it uses as much as digits as its factorization.

27601969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 27601969 is about 5253.7576076557. The cubic root of 27601969 is about 302.2131479207.

The spelling of 27601969 in words is "twenty-seven million, six hundred one thousand, nine hundred sixty-nine".