320572745 has 8 divisors (see below), whose sum is σ = 384902280. Its totient is φ = 256314880.

The previous prime is 320572729. The next prime is 320572793. The reversal of 320572745 is 547275023.

It can be written as a sum of positive squares in 4 ways, for example, as 29767936 + 290804809 = 5456^2 + 17053^2 .

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

It is not a de Polignac number, because 320572745 - 2⁴ = 320572729 is a prime.

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, 7526 + ... + 26415.

It is an arithmetic number, because the mean of its divisors is an integer number (48112785).

Almost surely, 2^320572745 is an apocalyptic number.

It is an amenable number.

320572745 is a deficient number, since it is larger than the sum of its proper divisors (64329535).

320572745 is a wasteful number, since it uses less digits than its factorization.

320572745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35835.

The product of its (nonzero) digits is 58800, while the sum is 35.

The square root of 320572745 is about 17904.5453726142. The cubic root of 320572745 is about 684.3982105234.

The spelling of 320572745 in words is "three hundred twenty million, five hundred seventy-two thousand, seven hundred forty-five".