664563234 has 16 divisors (see below), whose sum is σ = 1342287360. Its totient is φ = 219327600.

The previous prime is 664563227. The next prime is 664563239. The reversal of 664563234 is 432365466.

664563234 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 664563192 and 664563201.

It is not an unprimeable number, because it can be changed into a prime (664563239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 547714 + ... + 548925.

It is an arithmetic number, because the mean of its divisors is an integer number (83892960).

Almost surely, 2^664563234 is an apocalyptic number.

664563234 is an abundant number, since it is smaller than the sum of its proper divisors (677724126).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

664563234 is a wasteful number, since it uses less digits than its factorization.

664563234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096745.

The product of its digits is 311040, while the sum is 39.

The square root of 664563234 is about 25779.1239959778. The cubic root of 664563234 is about 872.6607379221.

The spelling of 664563234 in words is "six hundred sixty-four million, five hundred sixty-three thousand, two hundred thirty-four".