664366046 has 16 divisors (see below), whose sum is σ = 1085173200. Its totient is φ = 303847488.

The previous prime is 664366033. The next prime is 664366049. The reversal of 664366046 is 640663466.

It is a junction number, because it is equal to n+sod(n) for n = 664365994 and 664366012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664366049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 300335 + ... + 302538.

It is an arithmetic number, because the mean of its divisors is an integer number (67823325).

Almost surely, 2^664366046 is an apocalyptic number.

664366046 is a deficient number, since it is larger than the sum of its proper divisors (420807154).

664366046 is a wasteful number, since it uses less digits than its factorization.

664366046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602923.

The product of its (nonzero) digits is 373248, while the sum is 41.

The square root of 664366046 is about 25775.2991447238. The cubic root of 664366046 is about 872.5744179457.

The spelling of 664366046 in words is "six hundred sixty-four million, three hundred sixty-six thousand, forty-six".