664028290 has 32 divisors (see below), whose sum is σ = 1217752704. Its totient is φ = 260641920.

The previous prime is 664028243. The next prime is 664028291. The reversal of 664028290 is 92820466.

664028290 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (664028291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186507 + ... + 190033.

It is an arithmetic number, because the mean of its divisors is an integer number (38054772).

Almost surely, 2^664028290 is an apocalyptic number.

664028290 is a deficient number, since it is larger than the sum of its proper divisors (553724414).

664028290 is a wasteful number, since it uses less digits than its factorization.

664028290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3882.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 664028290 is about 25768.7463800628. The cubic root of 664028290 is about 872.4265239724.

The spelling of 664028290 in words is "six hundred sixty-four million, twenty-eight thousand, two hundred ninety".