636020636 has 6 divisors (see below), whose sum is σ = 1113036120. Its totient is φ = 318010316.

The previous prime is 636020629. The next prime is 636020647.

636020636 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79502576 + ... + 79502583.

It is an arithmetic number, because the mean of its divisors is an integer number (185506020).

Almost surely, 2^636020636 is an apocalyptic number.

It is an amenable number.

636020636 is a deficient number, since it is larger than the sum of its proper divisors (477015484).

636020636 is a wasteful number, since it uses less digits than its factorization.

636020636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159005163 (or 159005161 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 32.

The square root of 636020636 is about 25219.4495578314. The cubic root of 636020636 is about 859.9840613596.

The spelling of 636020636 in words is "six hundred thirty-six million, twenty thousand, six hundred thirty-six".