27661994 has 4 divisors (see below), whose sum is σ = 41492994. Its totient is φ = 13830996.

The previous prime is 27661979. The next prime is 27662017. The reversal of 27661994 is 49916672.

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., 13875625 + 13786369 = 3725^2 + 3713^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6915497 + ... + 6915500.

Almost surely, 2^27661994 is an apocalyptic number.

27661994 is a deficient number, since it is larger than the sum of its proper divisors (13831000).

27661994 is a wasteful number, since it uses less digits than its factorization.

27661994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13830999.

The product of its digits is 163296, while the sum is 44.

The square root of 27661994 is about 5259.4670832699. The cubic root of 27661994 is about 302.4320599647.

The spelling of 27661994 in words is "twenty-seven million, six hundred sixty-one thousand, nine hundred ninety-four".