27197986 has 4 divisors (see below), whose sum is σ = 40796982. Its totient is φ = 13598992.

The previous prime is 27197971. The next prime is 27197999. The reversal of 27197986 is 68979172.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 25150225 + 2047761 = 5015^2 + 1431^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6799495 + ... + 6799498.

Almost surely, 2^27197986 is an apocalyptic number.

27197986 is a deficient number, since it is larger than the sum of its proper divisors (13598996).

27197986 is a wasteful number, since it uses less digits than its factorization.

27197986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13598995.

The product of its digits is 381024, while the sum is 49.

The square root of 27197986 is about 5215.1688371519. The cubic root of 27197986 is about 300.7314964085.

The spelling of 27197986 in words is "twenty-seven million, one hundred ninety-seven thousand, nine hundred eighty-six".