999722698 has 16 divisors (see below), whose sum is σ = 1615461120. Its totient is φ = 461260656.

The previous prime is 999722657. The next prime is 999722699. The reversal of 999722698 is 896227999.

It is not an unprimeable number, because it can be changed into a prime (999722699) 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 7 ways as a sum of consecutive naturals, for example, 140011 + ... + 146977.

It is an arithmetic number, because the mean of its divisors is an integer number (100966320).

Almost surely, 2^999722698 is an apocalyptic number.

999722698 is a deficient number, since it is larger than the sum of its proper divisors (615738422).

999722698 is a wasteful number, since it uses less digits than its factorization.

999722698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12501.

The product of its digits is 8817984, while the sum is 61.

The square root of 999722698 is about 31618.3917680833. The cubic root of 999722698 is about 999.9075574546.

The spelling of 999722698 in words is "nine hundred ninety-nine million, seven hundred twenty-two thousand, six hundred ninety-eight".