27656646 has 8 divisors (see below), whose sum is σ = 55313304. Its totient is φ = 9218880.

The previous prime is 27656641. The next prime is 27656659. The reversal of 27656646 is 64665672.

It is a sphenic number, since it is the product of 3 distinct primes.

27656646 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 27656598 and 27656607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27656641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2304715 + ... + 2304726.

It is an arithmetic number, because the mean of its divisors is an integer number (6914163).

Almost surely, 2^27656646 is an apocalyptic number.

27656646 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

27656646 is a wasteful number, since it uses less digits than its factorization.

27656646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4609446.

The product of its digits is 362880, while the sum is 42.

The square root of 27656646 is about 5258.9586421648. The cubic root of 27656646 is about 302.4125685896.

The spelling of 27656646 in words is "twenty-seven million, six hundred fifty-six thousand, six hundred forty-six".