320556946 has 8 divisors (see below), whose sum is σ = 482125644. Its totient is φ = 159848400.

The previous prime is 320556919. The next prime is 320556979. The reversal of 320556946 is 649655023.

It can be written as a sum of positive squares in 2 ways, for example, as 277588921 + 42968025 = 16661^2 + 6555^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 320556899 and 320556908.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214105 + ... + 215596.

Almost surely, 2^320556946 is an apocalyptic number.

320556946 is a deficient number, since it is larger than the sum of its proper divisors (161568698).

320556946 is a wasteful number, since it uses less digits than its factorization.

320556946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430076.

The product of its (nonzero) digits is 194400, while the sum is 40.

The square root of 320556946 is about 17904.1041663636. The cubic root of 320556946 is about 684.3869671211.

The spelling of 320556946 in words is "three hundred twenty million, five hundred fifty-six thousand, nine hundred forty-six".