664605322 has 8 divisors (see below), whose sum is σ = 1023851556. Its totient is φ = 323321472.

The previous prime is 664605299. The next prime is 664605353. The reversal of 664605322 is 223506466.

It can be written as a sum of positive squares in 2 ways, for example, as 471367521 + 193237801 = 21711^2 + 13901^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4490503 + ... + 4490650.

Almost surely, 2^664605322 is an apocalyptic number.

664605322 is a deficient number, since it is larger than the sum of its proper divisors (359246234).

664605322 is a wasteful number, since it uses less digits than its factorization.

664605322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8981192.

The product of its (nonzero) digits is 51840, while the sum is 34.

The square root of 664605322 is about 25779.9403024910. The cubic root of 664605322 is about 872.6791599311.

The spelling of 664605322 in words is "six hundred sixty-four million, six hundred five thousand, three hundred twenty-two".