27660997 has 16 divisors (see below), whose sum is σ = 34840960. Its totient is φ = 21373632.

The previous prime is 27660977. The next prime is 27661003. The reversal of 27660997 is 79906672.

It is not a de Polignac number, because 27660997 - 2⁷ = 27660869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27660907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 379 + ... + 7447.

It is an arithmetic number, because the mean of its divisors is an integer number (2177560).

Almost surely, 2^27660997 is an apocalyptic number.

27660997 is the 3037-th hex number.

It is an amenable number.

27660997 is a deficient number, since it is larger than the sum of its proper divisors (7179963).

27660997 is a wasteful number, since it uses less digits than its factorization.

27660997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7132.

The product of its (nonzero) digits is 285768, while the sum is 46.

The square root of 27660997 is about 5259.3723009500. The cubic root of 27660997 is about 302.4284264789.

The spelling of 27660997 in words is "twenty-seven million, six hundred sixty thousand, nine hundred ninety-seven".