27634969 has 2 divisors, whose sum is σ = 27634970. Its totient is φ = 27634968.

The previous prime is 27634927. The next prime is 27634973. The reversal of 27634969 is 96943672.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14348944 + 13286025 = 3788^2 + 3645^2 .

It is a cyclic number.

It is not a de Polignac number, because 27634969 - 2¹⁷ = 27503897 is a prime.

It is a super-2 number, since 2×27634969² = 1527383023261922, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (27634909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13817484 + 13817485.

It is an arithmetic number, because the mean of its divisors is an integer number (13817485).

Almost surely, 2^27634969 is an apocalyptic number.

It is an amenable number.

27634969 is a deficient number, since it is larger than the sum of its proper divisors (1).

27634969 is an equidigital number, since it uses as much as digits as its factorization.

27634969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 46.

The square root of 27634969 is about 5256.8972788138. The cubic root of 27634969 is about 302.3335386320. Note that the first 3 decimals are identical.

It can be divided in two parts, 276 and 34969, that added together give a triangular number (35245 = T₂₆₅).

The spelling of 27634969 in words is "twenty-seven million, six hundred thirty-four thousand, nine hundred sixty-nine".