538698 has 8 divisors (see below), whose sum is σ = 1077408. Its totient is φ = 179564.

The previous prime is 538697. The next prime is 538709. The reversal of 538698 is 896835.

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

538698 is an admirable number.

It is a Curzon number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (538697) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 44886 + ... + 44897.

It is an arithmetic number, because the mean of its divisors is an integer number (134676).

2⁵³⁸⁶⁹⁸ is an apocalyptic number.

538698 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.

538698 is a wasteful number, since it uses less digits than its factorization.

538698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89788.

The product of its digits is 51840, while the sum is 39.

The square root of 538698 is about 733.9604893998. The cubic root of 538698 is about 81.3670282020.

The spelling of 538698 in words is "five hundred thirty-eight thousand, six hundred ninety-eight".