27663045 has 16 divisors (see below), whose sum is σ = 44425152. Its totient is φ = 14698880.

The previous prime is 27663023. The next prime is 27663047. The reversal of 27663045 is 54036672.

It is not a de Polignac number, because 27663045 - 2¹⁰ = 27662021 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 27662997 and 27663015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27663047) 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, 934 + ... + 7496.

It is an arithmetic number, because the mean of its divisors is an integer number (2776572).

Almost surely, 2^27663045 is an apocalyptic number.

It is an amenable number.

27663045 is a deficient number, since it is larger than the sum of its proper divisors (16762107).

27663045 is a wasteful number, since it uses less digits than its factorization.

27663045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6852.

The product of its (nonzero) digits is 30240, while the sum is 33.

The square root of 27663045 is about 5259.5669973868. The cubic root of 27663045 is about 302.4358901546.

The spelling of 27663045 in words is "twenty-seven million, six hundred sixty-three thousand, forty-five".