636376241 has 4 divisors (see below), whose sum is σ = 637853184. Its totient is φ = 634899300.

The previous prime is 636376219. The next prime is 636376267. The reversal of 636376241 is 142673636.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-636376241 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 636376195 and 636376204.

It is not an unprimeable number, because it can be changed into a prime (636372241) 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, 737825 + ... + 738686.

It is an arithmetic number, because the mean of its divisors is an integer number (159463296).

Almost surely, 2^636376241 is an apocalyptic number.

It is an amenable number.

636376241 is a deficient number, since it is larger than the sum of its proper divisors (1476943).

636376241 is a wasteful number, since it uses less digits than its factorization.

636376241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1476942.

The product of its digits is 108864, while the sum is 38.

The square root of 636376241 is about 25226.4987859988. The cubic root of 636376241 is about 860.1443065036.

The spelling of 636376241 in words is "six hundred thirty-six million, three hundred seventy-six thousand, two hundred forty-one".