694039 has 2 divisors, whose sum is σ = 694040. Its totient is φ = 694038.

The previous prime is 694033. The next prime is 694061. The reversal of 694039 is 930496.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 694039 - 2⁹ = 693527 is a prime.

It is a Chen prime.

It is an Ulam number.

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 694039.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (694033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 347019 + 347020.

It is an arithmetic number, because the mean of its divisors is an integer number (347020).

2⁶⁹⁴⁰³⁹ is an apocalyptic number.

694039 is a deficient number, since it is larger than the sum of its proper divisors (1).

694039 is an equidigital number, since it uses as much as digits as its factorization.

694039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 694039 is about 833.0900311491. The cubic root of 694039 is about 88.5376434496.

The spelling of 694039 in words is "six hundred ninety-four thousand, thirty-nine".