27165966 has 16 divisors (see below), whose sum is σ = 57528144. Its totient is φ = 8522624.

The previous prime is 27165947. The next prime is 27165973. The reversal of 27165966 is 66956172.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133065 + ... + 133268.

It is an arithmetic number, because the mean of its divisors is an integer number (3595509).

Almost surely, 2^27165966 is an apocalyptic number.

27165966 is an abundant number, since it is smaller than the sum of its proper divisors (30362178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27165966 is a wasteful number, since it uses less digits than its factorization.

27165966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266355.

The product of its digits is 136080, while the sum is 42.

The square root of 27165966 is about 5212.0980420556. The cubic root of 27165966 is about 300.6134336976.

It can be divided in two parts, 27165 and 966, that multiplied together give a triangular number (26241390 = T₇₂₄₄).

The spelling of 27165966 in words is "twenty-seven million, one hundred sixty-five thousand, nine hundred sixty-six".