636379103 has 24 divisors (see below), whose sum is σ = 703630800. Its totient is φ = 574713216.

The previous prime is 636379099. The next prime is 636379127. The reversal of 636379103 is 301973636.

It is a happy number.

It is not a de Polignac number, because 636379103 - 2² = 636379099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (636379193) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 931400 + ... + 932082.

It is an arithmetic number, because the mean of its divisors is an integer number (29317950).

Almost surely, 2^636379103 is an apocalyptic number.

636379103 is a deficient number, since it is larger than the sum of its proper divisors (67251697).

636379103 is a wasteful number, since it uses less digits than its factorization.

636379103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839 (or 820 counting only the distinct ones).

The product of its (nonzero) digits is 61236, while the sum is 38.

The square root of 636379103 is about 25226.5555119997. Note that the first 4 decimals coincide. The cubic root of 636379103 is about 860.1455959553.

The spelling of 636379103 in words is "six hundred thirty-six million, three hundred seventy-nine thousand, one hundred three".