320662066 has 8 divisors (see below), whose sum is σ = 492724764. Its totient is φ = 156420480.

The previous prime is 320662049. The next prime is 320662073. The reversal of 320662066 is 660266023.

It can be written as a sum of positive squares in 2 ways, for example, as 269124025 + 51538041 = 16405^2 + 7179^2 .

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, 1955175 + ... + 1955338.

Almost surely, 2^320662066 is an apocalyptic number.

320662066 is a deficient number, since it is larger than the sum of its proper divisors (172062698).

320662066 is a wasteful number, since it uses less digits than its factorization.

320662066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3910556.

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 320662066 is about 17907.0395654893. The cubic root of 320662066 is about 684.4617691142.

The spelling of 320662066 in words is "three hundred twenty million, six hundred sixty-two thousand, sixty-six".