999968574 has 16 divisors (see below), whose sum is σ = 2181749760. Its totient is φ = 303020760.

The previous prime is 999968573. The next prime is 999968587. The reversal of 999968574 is 475869999.

It is a Harshad number since it is a multiple of its sum of digits (66), and also a Moran number because the ratio is a prime number: 15151039 = 999968574 / (9 + 9 + 9 + 9 + 6 + 8 + 5 + 7 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999968573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7575454 + ... + 7575585.

It is an arithmetic number, because the mean of its divisors is an integer number (136359360).

Almost surely, 2^999968574 is an apocalyptic number.

999968574 is an abundant number, since it is smaller than the sum of its proper divisors (1181781186).

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

999968574 is a wasteful number, since it uses less digits than its factorization.

999968574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15151055.

The product of its digits is 44089920, while the sum is 66.

The square root of 999968574 is about 31622.2797090912. The cubic root of 999968574 is about 999.9895245569.

The spelling of 999968574 in words is "nine hundred ninety-nine million, nine hundred sixty-eight thousand, five hundred seventy-four".