100644223 has 8 divisors (see below), whose sum is σ = 102283776. Its totient is φ = 99015000.

The previous prime is 100644163. The next prime is 100644263. The reversal of 100644223 is 322446001.

It is a happy number.

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-100644223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100644194 and 100644203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100644263) 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, 18418 + ... + 23248.

It is an arithmetic number, because the mean of its divisors is an integer number (12785472).

Almost surely, 2^100644223 is an apocalyptic number.

100644223 is a deficient number, since it is larger than the sum of its proper divisors (1639553).

100644223 is an equidigital number, since it uses as much as digits as its factorization.

100644223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5165.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 100644223 is about 10032.1594385257. The cubic root of 100644223 is about 465.1534900086.

The spelling of 100644223 in words is "one hundred million, six hundred forty-four thousand, two hundred twenty-three".