27670345 has 4 divisors (see below), whose sum is σ = 33204420. Its totient is φ = 22136272.

The previous prime is 27670337. The next prime is 27670417. The reversal of 27670345 is 54307672.

It is a happy number.

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 8415801 + 19254544 = 2901^2 + 4388^2 .

It is a cyclic number.

It is not a de Polignac number, because 27670345 - 2³ = 27670337 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 27670345.

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, 2767030 + ... + 2767039.

It is an arithmetic number, because the mean of its divisors is an integer number (8301105).

Almost surely, 2^27670345 is an apocalyptic number.

It is an amenable number.

27670345 is a deficient number, since it is larger than the sum of its proper divisors (5534075).

27670345 is an equidigital number, since it uses as much as digits as its factorization.

27670345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5534074.

The product of its (nonzero) digits is 35280, while the sum is 34.

The square root of 27670345 is about 5260.2609250873. The cubic root of 27670345 is about 302.4624910804.

The spelling of 27670345 in words is "twenty-seven million, six hundred seventy thousand, three hundred forty-five".