320587397 has 8 divisors (see below), whose sum is σ = 348601344. Its totient is φ = 293052528.

The previous prime is 320587369. The next prime is 320587447. The reversal of 320587397 is 793785023.

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 320587397 - 2¹² = 320583301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320587307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118373 + ... + 121050.

It is an arithmetic number, because the mean of its divisors is an integer number (43575168).

Almost surely, 2^320587397 is an apocalyptic number.

It is an amenable number.

320587397 is a deficient number, since it is larger than the sum of its proper divisors (28013947).

320587397 is a wasteful number, since it uses less digits than its factorization.

320587397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239539.

The product of its (nonzero) digits is 317520, while the sum is 44.

The square root of 320587397 is about 17904.9545377809. The cubic root of 320587397 is about 684.4086373297.

The spelling of 320587397 in words is "three hundred twenty million, five hundred eighty-seven thousand, three hundred ninety-seven".