636242054 has 24 divisors (see below), whose sum is σ = 1140197520. Its totient is φ = 260816688.

The previous prime is 636242041. The next prime is 636242071. The reversal of 636242054 is 450242636.

It is a self number, because there is not a number n which added to its sum of digits gives 636242054.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35549 + ... + 50360.

It is an arithmetic number, because the mean of its divisors is an integer number (47508230).

Almost surely, 2^636242054 is an apocalyptic number.

636242054 is a deficient number, since it is larger than the sum of its proper divisors (503955466).

636242054 is a wasteful number, since it uses less digits than its factorization.

636242054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85964 (or 85941 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 32.

The square root of 636242054 is about 25223.8390020235. The cubic root of 636242054 is about 860.0838452596.

The spelling of 636242054 in words is "six hundred thirty-six million, two hundred forty-two thousand, fifty-four".