538697 has 2 divisors, whose sum is σ = 538698. Its totient is φ = 538696.

The previous prime is 538651. The next prime is 538709. The reversal of 538697 is 796835.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 292681 + 246016 = 541^2 + 496^2 .

It is a cyclic number.

It is not a de Polignac number, because 538697 - 2¹⁰ = 537673 is a prime.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 538697.

It is not a weakly prime, because it can be changed into another prime (538297) 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 as a sum of consecutive naturals, namely, 269348 + 269349.

It is an arithmetic number, because the mean of its divisors is an integer number (269349).

2⁵³⁸⁶⁹⁷ is an apocalyptic number.

It is an amenable number.

538697 is a deficient number, since it is larger than the sum of its proper divisors (1).

538697 is an equidigital number, since it uses as much as digits as its factorization.

538697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 38.

The square root of 538697 is about 733.9598081639. The cubic root of 538697 is about 81.3669778540.

The spelling of 538697 in words is "five hundred thirty-eight thousand, six hundred ninety-seven".