27161663 has 8 divisors (see below), whose sum is σ = 27961920. Its totient is φ = 26364960.

The previous prime is 27161593. The next prime is 27161669. The reversal of 27161663 is 36616172.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27161663 - 2¹⁸ = 26899519 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 (27161669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26093 + ... + 27113.

It is an arithmetic number, because the mean of its divisors is an integer number (3495240).

Almost surely, 2^27161663 is an apocalyptic number.

27161663 is a deficient number, since it is larger than the sum of its proper divisors (800257).

27161663 is a wasteful number, since it uses less digits than its factorization.

27161663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1777.

The product of its digits is 9072, while the sum is 32.

The square root of 27161663 is about 5211.6852360825. The cubic root of 27161663 is about 300.5975607985.

The spelling of 27161663 in words is "twenty-seven million, one hundred sixty-one thousand, six hundred sixty-three".