27685007 has 4 divisors (see below), whose sum is σ = 31640016. Its totient is φ = 23730000.

The previous prime is 27684971. The next prime is 27685013. The reversal of 27685007 is 70058672.

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

It is not a de Polignac number, because 27685007 - 2⁸ = 27684751 is a prime.

It is a super-2 number, since 2×27685007² = 1532919225180098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27685057) 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 in 3 ways as a sum of consecutive naturals, for example, 1977494 + ... + 1977507.

It is an arithmetic number, because the mean of its divisors is an integer number (7910004).

Almost surely, 2^27685007 is an apocalyptic number.

27685007 is a deficient number, since it is larger than the sum of its proper divisors (3955009).

27685007 is an equidigital number, since it uses as much as digits as its factorization.

27685007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3955008.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 27685007 is about 5261.6543976206. The cubic root of 27685007 is about 302.5159047258.

The spelling of 27685007 in words is "twenty-seven million, six hundred eighty-five thousand, seven".