636790476 has 96 divisors (see below), whose sum is σ = 1747468800. Its totient is φ = 180398400.

The previous prime is 636790463. The next prime is 636790487. The reversal of 636790476 is 674097636.

It is a super-2 number, since 2×636790476² = 811004220648613152, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 538606 + ... + 539786.

It is an arithmetic number, because the mean of its divisors is an integer number (18202800).

Almost surely, 2^636790476 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 636790476, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (873734400).

636790476 is an abundant number, since it is smaller than the sum of its proper divisors (1110678324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

636790476 is a wasteful number, since it uses less digits than its factorization.

636790476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340 (or 1324 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 48.

The square root of 636790476 is about 25234.7077652982. The cubic root of 636790476 is about 860.3308966436.

The spelling of 636790476 in words is "six hundred thirty-six million, seven hundred ninety thousand, four hundred seventy-six".