999968562 has 48 divisors (see below), whose sum is σ = 2288115648. Its totient is φ = 314978400.

The previous prime is 999968561. The next prime is 999968573. The reversal of 999968562 is 265869999.

999968562 is a `hidden beast` number, since 9 + 9 + 9 + 9 + 68 + 562 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 999968562.

It is not an unprimeable number, because it can be changed into a prime (999968561) 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 23 ways as a sum of consecutive naturals, for example, 19812 + ... + 48912.

It is an arithmetic number, because the mean of its divisors is an integer number (47669076).

Almost surely, 2^999968562 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 999968562, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1144057824).

999968562 is an abundant number, since it is smaller than the sum of its proper divisors (1288147086).

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

999968562 is a wasteful number, since it uses less digits than its factorization.

999968562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29215 (or 29212 counting only the distinct ones).

The product of its digits is 18895680, while the sum is 63.

The square root of 999968562 is about 31622.2795193515. The cubic root of 999968562 is about 999.9895205568.

The spelling of 999968562 in words is "nine hundred ninety-nine million, nine hundred sixty-eight thousand, five hundred sixty-two".