664041830 has 32 divisors (see below), whose sum is σ = 1259884800. Its totient is φ = 251296992.

The previous prime is 664041821. The next prime is 664041853. The reversal of 664041830 is 38140466.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172709 + ... + 176511.

It is an arithmetic number, because the mean of its divisors is an integer number (39371400).

Almost surely, 2^664041830 is an apocalyptic number.

664041830 is a deficient number, since it is larger than the sum of its proper divisors (595842970).

664041830 is a wasteful number, since it uses less digits than its factorization.

664041830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4748.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 664041830 is about 25769.0091000799. The cubic root of 664041830 is about 872.4324537272.

The spelling of 664041830 in words is "six hundred sixty-four million, forty-one thousand, eight hundred thirty".