635684016 has 160 divisors (see below), whose sum is σ = 1878736896. Its totient is φ = 183456000.

The previous prime is 635683991. The next prime is 635684029. The reversal of 635684016 is 610486536.

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, 1161855 + ... + 1162401.

Almost surely, 2^635684016 is an apocalyptic number.

635684016 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 635684016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (939368448).

635684016 is an abundant number, since it is smaller than the sum of its proper divisors (1243052880).

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

635684016 is a wasteful number, since it uses less digits than its factorization.

635684016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671 (or 665 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 635684016 is about 25212.7748572028. The cubic root of 635684016 is about 859.8323163245.

The spelling of 635684016 in words is "six hundred thirty-five million, six hundred eighty-four thousand, sixteen".