27664601 has 2 divisors, whose sum is σ = 27664602. Its totient is φ = 27664600.

The previous prime is 27664541. The next prime is 27664621. The reversal of 27664601 is 10646672.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19536400 + 8128201 = 4420^2 + 2851^2 .

It is a cyclic number.

It is not a de Polignac number, because 27664601 - 2¹⁴ = 27648217 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27664621) 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, 13832300 + 13832301.

It is an arithmetic number, because the mean of its divisors is an integer number (13832301).

Almost surely, 2^27664601 is an apocalyptic number.

It is an amenable number.

27664601 is a deficient number, since it is larger than the sum of its proper divisors (1).

27664601 is an equidigital number, since it uses as much as digits as its factorization.

27664601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 27664601 is about 5259.7149162288. The cubic root of 27664601 is about 302.4415605525.

The spelling of 27664601 in words is "twenty-seven million, six hundred sixty-four thousand, six hundred one".