320551066 has 8 divisors (see below), whose sum is σ = 524538144. Its totient is φ = 145705020.

The previous prime is 320551043. The next prime is 320551081. The reversal of 320551066 is 660155023.

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, 7285230 + ... + 7285273.

It is an arithmetic number, because the mean of its divisors is an integer number (65567268).

Almost surely, 2^320551066 is an apocalyptic number.

320551066 is a deficient number, since it is larger than the sum of its proper divisors (203987078).

320551066 is a wasteful number, since it uses less digits than its factorization.

320551066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14570516.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 320551066 is about 17903.9399574507. The cubic root of 320551066 is about 684.3827825085.

The spelling of 320551066 in words is "three hundred twenty million, five hundred fifty-one thousand, sixty-six".