27340657 has 4 divisors (see below), whose sum is σ = 27361600. Its totient is φ = 27319716.

The previous prime is 27340637. The next prime is 27340661. The reversal of 27340657 is 75604372.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27340657 - 2⁷ = 27340529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27340637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8373 + ... + 11170.

It is an arithmetic number, because the mean of its divisors is an integer number (6840400).

Almost surely, 2^27340657 is an apocalyptic number.

It is an amenable number.

27340657 is a deficient number, since it is larger than the sum of its proper divisors (20943).

27340657 is a wasteful number, since it uses less digits than its factorization.

27340657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20942.

The product of its (nonzero) digits is 35280, while the sum is 34.

The square root of 27340657 is about 5228.8294101070. The cubic root of 27340657 is about 301.2564232488.

The spelling of 27340657 in words is "twenty-seven million, three hundred forty thousand, six hundred fifty-seven".