320564395 has 8 divisors (see below), whose sum is σ = 384817104. Its totient is φ = 256358304.

The previous prime is 320564369. The next prime is 320564407. The reversal of 320564395 is 593465023.

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

It is a cyclic number.

It is not a de Polignac number, because 320564395 - 2⁷ = 320564267 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5877 + ... + 25993.

It is an arithmetic number, because the mean of its divisors is an integer number (48102138).

Almost surely, 2^320564395 is an apocalyptic number.

320564395 is a deficient number, since it is larger than the sum of its proper divisors (64252709).

320564395 is a wasteful number, since it uses less digits than its factorization.

320564395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23309.

The product of its (nonzero) digits is 97200, while the sum is 37.

The square root of 320564395 is about 17904.3121900843. The cubic root of 320564395 is about 684.3922682687.

It can be divided in two parts, 3205 and 64395, that added together give a square (67600 = 260²).

The spelling of 320564395 in words is "three hundred twenty million, five hundred sixty-four thousand, three hundred ninety-five".