635388 has 24 divisors (see below), whose sum is σ = 1597008. Its totient is φ = 195456.

The previous prime is 635387. The next prime is 635389. The reversal of 635388 is 883536.

It is an interprime number because it is at equal distance from previous prime (635387) and next prime (635389).

It is a plaindrome in base 14.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 635388.

It is not an unprimeable number, because it can be changed into a prime (635387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1881 + ... + 2192.

It is an arithmetic number, because the mean of its divisors is an integer number (66542).

2⁶³⁵³⁸⁸ is an apocalyptic number.

It is an amenable number.

635388 is an abundant number, since it is smaller than the sum of its proper divisors (961620).

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

635388 is a wasteful number, since it uses less digits than its factorization.

635388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4093 (or 4091 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 635388 is about 797.1122882004. The cubic root of 635388 is about 85.9698830906.

It can be divided in two parts, 63538 and 8, that added together give a triangular number (63546 = T₃₅₆).

The spelling of 635388 in words is "six hundred thirty-five thousand, three hundred eighty-eight".