635023 has 4 divisors (see below), whose sum is σ = 637920. Its totient is φ = 632128.

The previous prime is 635021. The next prime is 635039. The reversal of 635023 is 320536.

635023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 635023 - 2¹ = 635021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (635021) 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, 1090 + ... + 1567.

It is an arithmetic number, because the mean of its divisors is an integer number (159480).

2⁶³⁵⁰²³ is an apocalyptic number.

635023 is a deficient number, since it is larger than the sum of its proper divisors (2897).

635023 is a wasteful number, since it uses less digits than its factorization.

635023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2896.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 635023 is about 796.8833038783. The cubic root of 635023 is about 85.9534180761.

Adding to 635023 its reverse (320536), we get a palindrome (955559).

The spelling of 635023 in words is "six hundred thirty-five thousand, twenty-three".