27490689 has 6 divisors (see below), whose sum is σ = 39708786. Its totient is φ = 18327120.

The previous prime is 27490651. The next prime is 27490691. The reversal of 27490689 is 98609472.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 25553025 + 1937664 = 5055^2 + 1392^2 .

It is not a de Polignac number, because 27490689 - 2⁸ = 27490433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27490699) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1527252 + ... + 1527269.

It is an arithmetic number, because the mean of its divisors is an integer number (6618131).

Almost surely, 2^27490689 is an apocalyptic number.

It is an amenable number.

27490689 is a deficient number, since it is larger than the sum of its proper divisors (12218097).

27490689 is a wasteful number, since it uses less digits than its factorization.

27490689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3054527 (or 3054524 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 27490689 is about 5243.1563966756. The cubic root of 27490689 is about 301.8064670885.

The spelling of 27490689 in words is "twenty-seven million, four hundred ninety thousand, six hundred eighty-nine".