27860664 has 48 divisors (see below), whose sum is σ = 75432600. Its totient is φ = 8571264.

The previous prime is 27860653. The next prime is 27860681. The reversal of 27860664 is 46606872.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 622 + ... + 7490.

Almost surely, 2^27860664 is an apocalyptic number.

27860664 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 27860664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37716300).

27860664 is an abundant number, since it is smaller than the sum of its proper divisors (47571936).

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

27860664 is a wasteful number, since it uses less digits than its factorization.

27860664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6904 (or 6887 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 27860664 is about 5278.3201873323. The cubic root of 27860664 is about 303.1543615446.

The spelling of 27860664 in words is "twenty-seven million, eight hundred sixty thousand, six hundred sixty-four".