636393046 has 8 divisors (see below), whose sum is σ = 955060704. Its totient is φ = 318039480.

The previous prime is 636392971. The next prime is 636393059. The reversal of 636393046 is 640393636.

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

It is a super-2 number, since 2×636393046² = 809992217994316232, which contains 22 as substring.

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 in 3 ways as a sum of consecutive naturals, for example, 73390 + ... + 81601.

It is an arithmetic number, because the mean of its divisors is an integer number (119382588).

Almost surely, 2^636393046 is an apocalyptic number.

636393046 is a deficient number, since it is larger than the sum of its proper divisors (318667658).

636393046 is a wasteful number, since it uses less digits than its factorization.

636393046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157046.

The product of its (nonzero) digits is 209952, while the sum is 40.

The square root of 636393046 is about 25226.8318660905. The cubic root of 636393046 is about 860.1518778096.

The spelling of 636393046 in words is "six hundred thirty-six million, three hundred ninety-three thousand, forty-six".