636340135 has 8 divisors (see below), whose sum is σ = 764390880. Its totient is φ = 508550304.

The previous prime is 636340109. The next prime is 636340139. The reversal of 636340135 is 531043636.

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 636340135 - 2¹⁹ = 635815847 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 636340097 and 636340106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (636340139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59820 + ... + 69649.

It is an arithmetic number, because the mean of its divisors is an integer number (95548860).

Almost surely, 2^636340135 is an apocalyptic number.

636340135 is a deficient number, since it is larger than the sum of its proper divisors (128050745).

636340135 is a wasteful number, since it uses less digits than its factorization.

636340135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130457.

The product of its (nonzero) digits is 19440, while the sum is 31.

The square root of 636340135 is about 25225.7831394785. The cubic root of 636340135 is about 860.1280388956.

The spelling of 636340135 in words is "six hundred thirty-six million, three hundred forty thousand, one hundred thirty-five".