99686635 has 8 divisors (see below), whose sum is σ = 125920080. Its totient is φ = 75551904.

The previous prime is 99686633. The next prime is 99686647. The reversal of 99686635 is 53668699.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 99686635 - 2¹ = 99686633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99686633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 524572 + ... + 524761.

It is an arithmetic number, because the mean of its divisors is an integer number (15740010).

Almost surely, 2^99686635 is an apocalyptic number.

99686635 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

99686635 is a deficient number, since it is larger than the sum of its proper divisors (26233445).

99686635 is a wasteful number, since it uses less digits than its factorization.

99686635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1049357.

The product of its digits is 2099520, while the sum is 52.

The square root of 99686635 is about 9984.3194560270. The cubic root of 99686635 is about 463.6735388795.

The spelling of 99686635 in words is "ninety-nine million, six hundred eighty-six thousand, six hundred thirty-five".