636749248 has 28 divisors (see below), whose sum is σ = 1276072632. Its totient is φ = 315219200.

The previous prime is 636749213. The next prime is 636749249. The reversal of 636749248 is 842947636.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (636749249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42790 + ... + 55717.

Almost surely, 2^636749248 is an apocalyptic number.

It is an amenable number.

636749248 is an abundant number, since it is smaller than the sum of its proper divisors (639323384).

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

636749248 is a wasteful number, since it uses less digits than its factorization.

636749248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98620 (or 98610 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 49.

The square root of 636749248 is about 25233.8908613000. The cubic root of 636749248 is about 860.3123293184.

The spelling of 636749248 in words is "six hundred thirty-six million, seven hundred forty-nine thousand, two hundred forty-eight".