27690479 has 4 divisors (see below), whose sum is σ = 27780984. Its totient is φ = 27599976.

The previous prime is 27690449. The next prime is 27690491. The reversal of 27690479 is 97409672.

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

It is a cyclic number.

It is not a de Polignac number, because 27690479 - 2¹⁶ = 27624943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27690449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44792 + ... + 45405.

It is an arithmetic number, because the mean of its divisors is an integer number (6945246).

Almost surely, 2^27690479 is an apocalyptic number.

27690479 is a deficient number, since it is larger than the sum of its proper divisors (90505).

27690479 is an equidigital number, since it uses as much as digits as its factorization.

27690479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90504.

The product of its (nonzero) digits is 190512, while the sum is 44.

The square root of 27690479 is about 5262.1743604712. The cubic root of 27690479 is about 302.5358343816.

The spelling of 27690479 in words is "twenty-seven million, six hundred ninety thousand, four hundred seventy-nine".