538635 has 16 divisors (see below), whose sum is σ = 871200. Its totient is φ = 284160.

The previous prime is 538621. The next prime is 538649. The reversal of 538635 is 536835.

It is an interprime number because it is at equal distance from previous prime (538621) and next prime (538649).

It is not a de Polignac number, because 538635 - 2⁹ = 538123 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2115 + ... + 2355.

It is an arithmetic number, because the mean of its divisors is an integer number (54450).

2⁵³⁸⁶³⁵ is an apocalyptic number.

538635 is a deficient number, since it is larger than the sum of its proper divisors (332565).

538635 is a wasteful number, since it uses less digits than its factorization.

538635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398.

The product of its digits is 10800, while the sum is 30.

The square root of 538635 is about 733.9175703034. The cubic root of 538635 is about 81.3638561572.

The spelling of 538635 in words is "five hundred thirty-eight thousand, six hundred thirty-five".