905506568 has 12 divisors (see below), whose sum is σ = 1697984415. Its totient is φ = 452710728.

The previous prime is 905506561. The next prime is 905506597. The reversal of 905506568 is 865605509.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 452753284 + 452753284 = 21278^2 + 21278^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=21278.

It is a super-2 number, since 2×905506568² = 1639884289382277248, which contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (905506561) 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 2 ways as a sum of consecutive naturals, for example, 79793 + ... + 90431.

Almost surely, 2^905506568 is an apocalyptic number.

It is an amenable number.

905506568 is a deficient number, since it is larger than the sum of its proper divisors (792477847).

905506568 is an frugal number, since it uses more digits than its factorization.

905506568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21284 (or 10641 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 44.

The square root of 905506568 is about 30091.6361801747. The cubic root of 905506568 is about 967.4544685867.

The spelling of 905506568 in words is "nine hundred five million, five hundred six thousand, five hundred sixty-eight".