635380 has 12 divisors (see below), whose sum is σ = 1334340. Its totient is φ = 254144.

The previous prime is 635363. The next prime is 635387. The reversal of 635380 is 83536.

It can be written as a sum of positive squares in 2 ways, for example, as 197136 + 438244 = 444^2 + 662^2 .

It is a congruent number.

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

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15865 + ... + 15904.

It is an arithmetic number, because the mean of its divisors is an integer number (111195).

2⁶³⁵³⁸⁰ is an apocalyptic number.

It is an amenable number.

635380 is an abundant number, since it is smaller than the sum of its proper divisors (698960).

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

635380 is a wasteful number, since it uses less digits than its factorization.

635380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31778 (or 31776 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 635380 is about 797.1072700710. The cubic root of 635380 is about 85.9695222812.

The spelling of 635380 in words is "six hundred thirty-five thousand, three hundred eighty".