320556346 has 12 divisors (see below), whose sum is σ = 528520986. Its totient is φ = 145707320.

The previous prime is 320556331. The next prime is 320556347. The reversal of 320556346 is 643655023.

It can be written as a sum of positive squares in only one way, i.e., 199798225 + 120758121 = 14135^2 + 10989^2 .

It is not an unprimeable number, because it can be changed into a prime (320556347) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 662065 + ... + 662548.

Almost surely, 2^320556346 is an apocalyptic number.

320556346 is a deficient number, since it is larger than the sum of its proper divisors (207964640).

320556346 is a wasteful number, since it uses less digits than its factorization.

320556346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324637 (or 1324626 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 34.

The square root of 320556346 is about 17904.0874104211. The cubic root of 320556346 is about 684.3865401222.

The spelling of 320556346 in words is "three hundred twenty million, five hundred fifty-six thousand, three hundred forty-six".