27663139 has 16 divisors (see below), whose sum is σ = 32288256. Its totient is φ = 23212800.

The previous prime is 27663137. The next prime is 27663143. The reversal of 27663139 is 93136672.

It is a cyclic number.

It is not a de Polignac number, because 27663139 - 2¹ = 27663137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27663098 and 27663107.

It is not an unprimeable number, because it can be changed into a prime (27663137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88794 + ... + 89104.

It is an arithmetic number, because the mean of its divisors is an integer number (2018016).

Almost surely, 2^27663139 is an apocalyptic number.

27663139 is a deficient number, since it is larger than the sum of its proper divisors (4625117).

27663139 is a wasteful number, since it uses less digits than its factorization.

27663139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546.

The product of its digits is 40824, while the sum is 37.

The square root of 27663139 is about 5259.5759334760. The cubic root of 27663139 is about 302.4362327168.

The spelling of 27663139 in words is "twenty-seven million, six hundred sixty-three thousand, one hundred thirty-nine".