27937661 has 4 divisors (see below), whose sum is σ = 28041024. Its totient is φ = 27834300.

The previous prime is 27937633. The next prime is 27937669. The reversal of 27937661 is 16673972.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27937661 - 2¹⁴ = 27921277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27937669) 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, 51275 + ... + 51816.

It is an arithmetic number, because the mean of its divisors is an integer number (7010256).

Almost surely, 2^27937661 is an apocalyptic number.

It is an amenable number.

27937661 is a deficient number, since it is larger than the sum of its proper divisors (103363).

27937661 is a wasteful number, since it uses less digits than its factorization.

27937661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103362.

The product of its digits is 95256, while the sum is 41.

The square root of 27937661 is about 5285.6088580219. The cubic root of 27937661 is about 303.4333750712.

The spelling of 27937661 in words is "twenty-seven million, nine hundred thirty-seven thousand, six hundred sixty-one".