635884 has 12 divisors (see below), whose sum is σ = 1138984. Its totient is φ = 310464.

The previous prime is 635879. The next prime is 635891. The reversal of 635884 is 488536.

It is a super-2 number, since 2×635884² = 808696922912, which contains 22 as substring.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

635884 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1677 + ... + 2020.

2⁶³⁵⁸⁸⁴ is an apocalyptic number.

It is an amenable number.

635884 is a deficient number, since it is larger than the sum of its proper divisors (503100).

635884 is a wasteful number, since it uses less digits than its factorization.

635884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3744 (or 3742 counting only the distinct ones).

The product of its digits is 23040, while the sum is 34.

The square root of 635884 is about 797.4233505485. The cubic root of 635884 is about 85.9922473632.

The spelling of 635884 in words is "six hundred thirty-five thousand, eight hundred eighty-four".