27404065 has 16 divisors (see below), whose sum is σ = 35633808. Its totient is φ = 20111616.

The previous prime is 27404059. The next prime is 27404071. The reversal of 27404065 is 56040472.

It is an interprime number because it is at equal distance from previous prime (27404059) and next prime (27404071).

It can be written as a sum of positive squares in 8 ways, for example, as 1607824 + 25796241 = 1268^2 + 5079^2 .

It is a cyclic number.

It is not a de Polignac number, because 27404065 - 2¹⁹ = 26879777 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10027 + ... + 12463.

It is an arithmetic number, because the mean of its divisors is an integer number (2227113).

Almost surely, 2^27404065 is an apocalyptic number.

It is an amenable number.

27404065 is a deficient number, since it is larger than the sum of its proper divisors (8229743).

27404065 is a wasteful number, since it uses less digits than its factorization.

27404065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2628.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 27404065 is about 5234.8892060864. The cubic root of 27404065 is about 301.4891330823.

The spelling of 27404065 in words is "twenty-seven million, four hundred four thousand, sixty-five".