664541662 has 16 divisors (see below), whose sum is σ = 1073340720. Its totient is φ = 307424128.

The previous prime is 664541659. The next prime is 664541671. The reversal of 664541662 is 266145466.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163633 + ... + 167644.

It is an arithmetic number, because the mean of its divisors is an integer number (67083795).

Almost surely, 2^664541662 is an apocalyptic number.

664541662 is a deficient number, since it is larger than the sum of its proper divisors (408799058).

664541662 is a wasteful number, since it uses less digits than its factorization.

664541662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331355.

The product of its digits is 207360, while the sum is 40.

The square root of 664541662 is about 25778.7055920192. The cubic root of 664541662 is about 872.6512955093.

The spelling of 664541662 in words is "six hundred sixty-four million, five hundred forty-one thousand, six hundred sixty-two".