99563857 has 8 divisors (see below), whose sum is σ = 106581600. Its totient is φ = 92723904.

The previous prime is 99563843. The next prime is 99563861. The reversal of 99563857 is 75836599.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99563857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99563837) 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, 43288 + ... + 45529.

It is an arithmetic number, because the mean of its divisors is an integer number (13322700).

Almost surely, 2^99563857 is an apocalyptic number.

It is an amenable number.

99563857 is a deficient number, since it is larger than the sum of its proper divisors (7017743).

99563857 is a wasteful number, since it uses less digits than its factorization.

99563857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88895.

The product of its digits is 2041200, while the sum is 52.

The square root of 99563857 is about 9978.1690204165. The cubic root of 99563857 is about 463.4831011218.

The spelling of 99563857 in words is "ninety-nine million, five hundred sixty-three thousand, eight hundred fifty-seven".