27280664 has 16 divisors (see below), whose sum is σ = 51990720. Its totient is φ = 13416480.

The previous prime is 27280607. The next prime is 27280681. The reversal of 27280664 is 46608272.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27464 + ... + 28439.

It is an arithmetic number, because the mean of its divisors is an integer number (3249420).

Almost surely, 2^27280664 is an apocalyptic number.

It is an amenable number.

27280664 is a deficient number, since it is larger than the sum of its proper divisors (24710056).

27280664 is a wasteful number, since it uses less digits than its factorization.

27280664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55970 (or 55966 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 27280664 is about 5223.0895071787. The cubic root of 27280664 is about 301.0359151120.

The spelling of 27280664 in words is "twenty-seven million, two hundred eighty thousand, six hundred sixty-four".