538634 has 4 divisors (see below), whose sum is σ = 807954. Its totient is φ = 269316.

The previous prime is 538621. The next prime is 538649. The reversal of 538634 is 436835.

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

It can be written as a sum of positive squares in only one way, i.e., 426409 + 112225 = 653^2 + 335^2 .

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 538597 and 538606.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134657 + ... + 134660.

2⁵³⁸⁶³⁴ is an apocalyptic number.

538634 is a deficient number, since it is larger than the sum of its proper divisors (269320).

538634 is a wasteful number, since it uses less digits than its factorization.

538634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269319.

The product of its digits is 8640, while the sum is 29.

The square root of 538634 is about 733.9168890276. The cubic root of 538634 is about 81.3638058053.

The spelling of 538634 in words is "five hundred thirty-eight thousand, six hundred thirty-four".