27609897 has 16 divisors (see below), whose sum is σ = 42355712. Its totient is φ = 15670800.

The previous prime is 27609889. The next prime is 27609899. The reversal of 27609897 is 79890672.

It is not a de Polignac number, because 27609897 - 2³ = 27609889 is a prime.

It is a super-4 number, since 4×27609897⁴ (a number of 31 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (27609899) 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, 1183 + ... + 7524.

It is an arithmetic number, because the mean of its divisors is an integer number (2647232).

Almost surely, 2^27609897 is an apocalyptic number.

It is an amenable number.

27609897 is a deficient number, since it is larger than the sum of its proper divisors (14745815).

27609897 is a wasteful number, since it uses less digits than its factorization.

27609897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8868.

The product of its (nonzero) digits is 381024, while the sum is 48.

The square root of 27609897 is about 5254.5120610767. The cubic root of 27609897 is about 302.2420796307.

The spelling of 27609897 in words is "twenty-seven million, six hundred nine thousand, eight hundred ninety-seven".