99863625 has 32 divisors (see below), whose sum is σ = 166937472. Its totient is φ = 53016000.

The previous prime is 99863623. The next prime is 99863657. The reversal of 99863625 is 52636899.

It is not a de Polignac number, because 99863625 - 2¹ = 99863623 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (99863623) 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, 105655 + ... + 106595.

It is an arithmetic number, because the mean of its divisors is an integer number (5216796).

Almost surely, 2^99863625 is an apocalyptic number.

It is an amenable number.

99863625 is a deficient number, since it is larger than the sum of its proper divisors (67073847).

99863625 is a wasteful number, since it uses less digits than its factorization.

99863625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1242 (or 1232 counting only the distinct ones).

The product of its digits is 699840, while the sum is 48.

The square root of 99863625 is about 9993.1789236459. The cubic root of 99863625 is about 463.9477884796.

The spelling of 99863625 in words is "ninety-nine million, eight hundred sixty-three thousand, six hundred twenty-five".