635478 has 8 divisors (see below), whose sum is σ = 1270968. Its totient is φ = 211824.

The previous prime is 635471. The next prime is 635483. The reversal of 635478 is 874536.

635478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

635478 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (635471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52951 + ... + 52962.

It is an arithmetic number, because the mean of its divisors is an integer number (158871).

2⁶³⁵⁴⁷⁸ is an apocalyptic number.

635478 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

635478 is a wasteful number, since it uses less digits than its factorization.

635478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105918.

The product of its digits is 20160, while the sum is 33.

The square root of 635478 is about 797.1687399792. The cubic root of 635478 is about 85.9739419880.

The spelling of 635478 in words is "six hundred thirty-five thousand, four hundred seventy-eight".