27620465 has 4 divisors (see below), whose sum is σ = 33144564. Its totient is φ = 22096368.

The previous prime is 27620449. The next prime is 27620497. The reversal of 27620465 is 56402672.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8549776 + 19070689 = 2924^2 + 4367^2 .

It is a cyclic number.

It is not a de Polignac number, because 27620465 - 2⁴ = 27620449 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 2762042 + ... + 2762051.

It is an arithmetic number, because the mean of its divisors is an integer number (8286141).

Almost surely, 2^27620465 is an apocalyptic number.

It is an amenable number.

27620465 is a deficient number, since it is larger than the sum of its proper divisors (5524099).

27620465 is an equidigital number, since it uses as much as digits as its factorization.

27620465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5524098.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 27620465 is about 5255.5175767949. The cubic root of 27620465 is about 302.2806369019.

The spelling of 27620465 in words is "twenty-seven million, six hundred twenty thousand, four hundred sixty-five".