27933661 has 8 divisors (see below), whose sum is σ = 33312384. Its totient is φ = 22902000.

The previous prime is 27933643. The next prime is 27933673. The reversal of 27933661 is 16633972.

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

It is a cyclic number.

It is not a de Polignac number, because 27933661 - 2¹⁷ = 27802589 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27933661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27933691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86590 + ... + 86911.

It is an arithmetic number, because the mean of its divisors is an integer number (4164048).

Almost surely, 2^27933661 is an apocalyptic number.

It is an amenable number.

27933661 is a deficient number, since it is larger than the sum of its proper divisors (5378723).

27933661 is a wasteful number, since it uses less digits than its factorization.

27933661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173531.

The product of its digits is 40824, while the sum is 37.

The square root of 27933661 is about 5285.2304585515. The cubic root of 27933661 is about 303.4188929302.

The spelling of 27933661 in words is "twenty-seven million, nine hundred thirty-three thousand, six hundred sixty-one".