9999000687 has 32 divisors (see below), whose sum is σ = 15232831488. Its totient is φ = 5779570176.

The previous prime is 9999000677. The next prime is 9999000689. The reversal of 9999000687 is 7860009999.

It is not a de Polignac number, because 9999000687 - 2⁷ = 9999000559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9999000689) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 318498 + ... + 348480.

It is an arithmetic number, because the mean of its divisors is an integer number (476025984).

Almost surely, 2^9999000687 is an apocalyptic number.

9999000687 is a deficient number, since it is larger than the sum of its proper divisors (5233830801).

9999000687 is a wasteful number, since it uses less digits than its factorization.

9999000687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30519.

The product of its (nonzero) digits is 2204496, while the sum is 57.

The square root of 9999000687 is about 99995.0033101655. The cubic root of 9999000687 is about 2154.3629224881.

The spelling of 9999000687 in words is "nine billion, nine hundred ninety-nine million, six hundred eighty-seven", and thus it is an aban number.