100808863 has 4 divisors (see below), whose sum is σ = 100858048. Its totient is φ = 100759680.

The previous prime is 100808821. The next prime is 100808867. The reversal of 100808863 is 368808001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100808863 - 2¹³ = 100800671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100808867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21378 + ... + 25663.

It is an arithmetic number, because the mean of its divisors is an integer number (25214512).

Almost surely, 2^100808863 is an apocalyptic number.

100808863 is a deficient number, since it is larger than the sum of its proper divisors (49185).

100808863 is an equidigital number, since it uses as much as digits as its factorization.

100808863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49184.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 100808863 is about 10040.3616966721. The cubic root of 100808863 is about 465.4069940402.

The spelling of 100808863 in words is "one hundred million, eight hundred eight thousand, eight hundred sixty-three".