664315298 has 4 divisors (see below), whose sum is σ = 996472950. Its totient is φ = 332157648.

The previous prime is 664315247. The next prime is 664315321. The reversal of 664315298 is 892513466.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 551169529 + 113145769 = 23477^2 + 10637^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166078823 + ... + 166078826.

Almost surely, 2^664315298 is an apocalyptic number.

664315298 is a deficient number, since it is larger than the sum of its proper divisors (332157652).

664315298 is a wasteful number, since it uses less digits than its factorization.

664315298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332157651.

The product of its digits is 311040, while the sum is 44.

The square root of 664315298 is about 25774.3146950603. The cubic root of 664315298 is about 872.5522000061.

The spelling of 664315298 in words is "six hundred sixty-four million, three hundred fifteen thousand, two hundred ninety-eight".