320494686 has 8 divisors (see below), whose sum is σ = 640989384. Its totient is φ = 106831560.

The previous prime is 320494661. The next prime is 320494687. The reversal of 320494686 is 686494023.

It is a happy number.

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

320494686 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320494687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26707885 + ... + 26707896.

It is an arithmetic number, because the mean of its divisors is an integer number (80123673).

Almost surely, 2^320494686 is an apocalyptic number.

320494686 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

320494686 is a wasteful number, since it uses less digits than its factorization.

320494686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53415786.

The product of its (nonzero) digits is 248832, while the sum is 42.

The square root of 320494686 is about 17902.3653744414. The cubic root of 320494686 is about 684.3426560224.

The spelling of 320494686 in words is "three hundred twenty million, four hundred ninety-four thousand, six hundred eighty-six".