27661612 has 12 divisors (see below), whose sum is σ = 52808616. Its totient is φ = 12573440.

The previous prime is 27661591. The next prime is 27661631. The reversal of 27661612 is 21616672.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 314293 + ... + 314380.

It is an arithmetic number, because the mean of its divisors is an integer number (4400718).

Almost surely, 2^27661612 is an apocalyptic number.

27661612 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

27661612 is a deficient number, since it is larger than the sum of its proper divisors (25147004).

27661612 is a wasteful number, since it uses less digits than its factorization.

27661612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628688 (or 628686 counting only the distinct ones).

The product of its digits is 6048, while the sum is 31.

The square root of 27661612 is about 5259.4307676782. The cubic root of 27661612 is about 302.4306678069.

The spelling of 27661612 in words is "twenty-seven million, six hundred sixty-one thousand, six hundred twelve".