27977613 has 16 divisors (see below), whose sum is σ = 38196480. Its totient is φ = 18210816.

The previous prime is 27977561. The next prime is 27977627. The reversal of 27977613 is 31677972.

It is not a de Polignac number, because 27977613 - 2¹⁸ = 27715469 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27977413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22381 + ... + 23597.

It is an arithmetic number, because the mean of its divisors is an integer number (2387280).

Almost surely, 2^27977613 is an apocalyptic number.

It is an amenable number.

27977613 is a deficient number, since it is larger than the sum of its proper divisors (10218867).

27977613 is a wasteful number, since it uses less digits than its factorization.

27977613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1396.

The product of its digits is 111132, while the sum is 42.

The square root of 27977613 is about 5289.3868264668. The cubic root of 27977613 is about 303.5779468984.

The spelling of 27977613 in words is "twenty-seven million, nine hundred seventy-seven thousand, six hundred thirteen".