320634445 has 16 divisors (see below), whose sum is σ = 394682112. Its totient is φ = 249923520.

The previous prime is 320634427. The next prime is 320634491. The reversal of 320634445 is 544436023.

It is not a de Polignac number, because 320634445 - 2⁷ = 320634317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97935 + ... + 101155.

It is an arithmetic number, because the mean of its divisors is an integer number (24667632).

Almost surely, 2^320634445 is an apocalyptic number.

It is an amenable number.

320634445 is a deficient number, since it is larger than the sum of its proper divisors (74047667).

320634445 is a wasteful number, since it uses less digits than its factorization.

320634445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3732.

The product of its (nonzero) digits is 34560, while the sum is 31.

The square root of 320634445 is about 17906.2683158720. The cubic root of 320634445 is about 684.4421159618.

The spelling of 320634445 in words is "three hundred twenty million, six hundred thirty-four thousand, four hundred forty-five".