635004 has 36 divisors (see below), whose sum is σ = 1659840. Its totient is φ = 204480.

The previous prime is 635003. The next prime is 635021. The reversal of 635004 is 400536.

635004 = T₁₁₁ + T₁₁₂ + ... + T₁₇₂.

It is a happy number.

635004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (635003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 832 + ... + 1400.

2⁶³⁵⁰⁰⁴ 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 635004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (829920).

635004 is an abundant number, since it is smaller than the sum of its proper divisors (1024836).

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

635004 is a wasteful number, since it uses less digits than its factorization.

635004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610 (or 605 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 635004 is about 796.8713823447. The cubic root of 635004 is about 85.9525608204.

It can be divided in two parts, 63500 and 4, that added together give a square (63504 = 252²).

The spelling of 635004 in words is "six hundred thirty-five thousand, four".