636371345 has 16 divisors (see below), whose sum is σ = 779898240. Its totient is φ = 498336000.

The previous prime is 636371311. The next prime is 636371357. The reversal of 636371345 is 543173636.

It is a happy number.

It is not a de Polignac number, because 636371345 - 2¹⁰ = 636370321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 636371299 and 636371308.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66620 + ... + 75570.

It is an arithmetic number, because the mean of its divisors is an integer number (48743640).

Almost surely, 2^636371345 is an apocalyptic number.

It is an amenable number.

636371345 is a deficient number, since it is larger than the sum of its proper divisors (143526895).

636371345 is a wasteful number, since it uses less digits than its factorization.

636371345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9256.

The product of its digits is 136080, while the sum is 38.

The square root of 636371345 is about 25226.4017449972. The cubic root of 636371345 is about 860.1421006401.

The spelling of 636371345 in words is "six hundred thirty-six million, three hundred seventy-one thousand, three hundred forty-five".