664533627 has 4 divisors (see below), whose sum is σ = 886044840. Its totient is φ = 443022416.

The previous prime is 664533619. The next prime is 664533629. The reversal of 664533627 is 726335466.

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

It is a cyclic number.

It is not a de Polignac number, because 664533627 - 2³ = 664533619 is a prime.

It is not an unprimeable number, because it can be changed into a prime (664533629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110755602 + ... + 110755607.

It is an arithmetic number, because the mean of its divisors is an integer number (221511210).

Almost surely, 2^664533627 is an apocalyptic number.

664533627 is a deficient number, since it is larger than the sum of its proper divisors (221511213).

664533627 is a wasteful number, since it uses less digits than its factorization.

664533627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221511212.

The product of its digits is 544320, while the sum is 42.

The square root of 664533627 is about 25778.5497458643. The cubic root of 664533627 is about 872.6477784078.

The spelling of 664533627 in words is "six hundred sixty-four million, five hundred thirty-three thousand, six hundred twenty-seven".