99998685 has 48 divisors (see below), whose sum is σ = 181540800. Its totient is φ = 52223616.

The previous prime is 99998663. The next prime is 99998749. The reversal of 99998685 is 58689999.

It is not a de Polignac number, because 99998685 - 2⁷ = 99998557 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 719346 + ... + 719484.

It is an arithmetic number, because the mean of its divisors is an integer number (3782100).

Almost surely, 2^99998685 is an apocalyptic number.

It is an amenable number.

99998685 is a deficient number, since it is larger than the sum of its proper divisors (81542115).

99998685 is a wasteful number, since it uses less digits than its factorization.

99998685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299 (or 220 counting only the distinct ones).

The product of its digits is 12597120, while the sum is 63.

The square root of 99998685 is about 9999.9342497838. The cubic root of 99998685 is about 464.1568487893.

The spelling of 99998685 in words is "ninety-nine million, nine hundred ninety-eight thousand, six hundred eighty-five".