531568946 has 8 divisors (see below), whose sum is σ = 798647580. Its totient is φ = 265353088.

The previous prime is 531568931. The next prime is 531568949. The reversal of 531568946 is 649865135.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 337273225 + 194295721 = 18365^2 + 13939^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 531568946.

It is not an unprimeable number, because it can be changed into a prime (531568949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214151 + ... + 216618.

Almost surely, 2^531568946 is an apocalyptic number.

531568946 is a deficient number, since it is larger than the sum of its proper divisors (267078634).

531568946 is a wasteful number, since it uses less digits than its factorization.

531568946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431388.

The product of its digits is 777600, while the sum is 47.

The square root of 531568946 is about 23055.7790152491. The cubic root of 531568946 is about 810.0649980865.

The spelling of 531568946 in words is "five hundred thirty-one million, five hundred sixty-eight thousand, nine hundred forty-six".