636848045 has 8 divisors (see below), whose sum is σ = 765391896. Its totient is φ = 508695616.

The previous prime is 636848041. The next prime is 636848071. The reversal of 636848045 is 540848636.

It can be written as a sum of positive squares in 4 ways, for example, as 850084 + 635997961 = 922^2 + 25219^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 636848045 - 2² = 636848041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 636847987 and 636848005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (636848041) 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, 94262 + ... + 100791.

It is an arithmetic number, because the mean of its divisors is an integer number (95673987).

Almost surely, 2^636848045 is an apocalyptic number.

It is an amenable number.

636848045 is a deficient number, since it is larger than the sum of its proper divisors (128543851).

636848045 is a wasteful number, since it uses less digits than its factorization.

636848045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195711.

The product of its (nonzero) digits is 552960, while the sum is 44.

The square root of 636848045 is about 25235.8484105449. The cubic root of 636848045 is about 860.3568219146.

The spelling of 636848045 in words is "six hundred thirty-six million, eight hundred forty-eight thousand, forty-five".