664424466 has 16 divisors (see below), whose sum is σ = 1364764224. Its totient is φ = 215488944.

The previous prime is 664424407. The next prime is 664424473.

664424466 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1496230 + ... + 1496673.

It is an arithmetic number, because the mean of its divisors is an integer number (85297764).

Almost surely, 2^664424466 is an apocalyptic number.

664424466 is an abundant number, since it is smaller than the sum of its proper divisors (700339758).

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

664424466 is a wasteful number, since it uses less digits than its factorization.

664424466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2992945.

The product of its digits is 663552, while the sum is 42.

The square root of 664424466 is about 25776.4323753308. The cubic root of 664424466 is about 872.5999933564.

The spelling of 664424466 in words is "six hundred sixty-four million, four hundred twenty-four thousand, four hundred sixty-six".