27740664 has 96 divisors (see below), whose sum is σ = 89672400. Its totient is φ = 7922880.

The previous prime is 27740621. The next prime is 27740683. The reversal of 27740664 is 46604772.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9274 + ... + 11894.

Almost surely, 2^27740664 is an apocalyptic number.

27740664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27740664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44836200).

27740664 is an abundant number, since it is smaller than the sum of its proper divisors (61931736).

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

27740664 is a wasteful number, since it uses less digits than its factorization.

27740664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2650 (or 2633 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 36.

The square root of 27740664 is about 5266.9406679779. The cubic root of 27740664 is about 302.7184916032.

The spelling of 27740664 in words is "twenty-seven million, seven hundred forty thousand, six hundred sixty-four".