636463442 has 8 divisors (see below), whose sum is σ = 1010853756. Its totient is φ = 299512192.

The previous prime is 636463439. The next prime is 636463469. The reversal of 636463442 is 244364636.

It can be written as a sum of positive squares in 2 ways, for example, as 600691081 + 35772361 = 24509^2 + 5981^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 636463396 and 636463405.

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, 9359723 + ... + 9359790.

Almost surely, 2^636463442 is an apocalyptic number.

636463442 is a deficient number, since it is larger than the sum of its proper divisors (374390314).

636463442 is a wasteful number, since it uses less digits than its factorization.

636463442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18719532.

The product of its digits is 248832, while the sum is 38.

The square root of 636463442 is about 25228.2270879267. The cubic root of 636463442 is about 860.1835924968.

The spelling of 636463442 in words is "six hundred thirty-six million, four hundred sixty-three thousand, four hundred forty-two".