694459 has 4 divisors (see below), whose sum is σ = 707616. Its totient is φ = 681304.

The previous prime is 694457. The next prime is 694471. The reversal of 694459 is 954496.

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

It is a cyclic number.

It is not a de Polignac number, because 694459 - 2¹ = 694457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (694457) 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 in 3 ways as a sum of consecutive naturals, for example, 6499 + ... + 6604.

It is an arithmetic number, because the mean of its divisors is an integer number (176904).

2⁶⁹⁴⁴⁵⁹ is an apocalyptic number.

694459 is a deficient number, since it is larger than the sum of its proper divisors (13157).

694459 is a wasteful number, since it uses less digits than its factorization.

694459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13156.

The product of its digits is 38880, while the sum is 37.

The square root of 694459 is about 833.3420666209. The cubic root of 694459 is about 88.5554994643. Note that the first 3 decimals are identical.

Adding to 694459 its sum of digits (37), we get a palindrome (694496).

The spelling of 694459 in words is "six hundred ninety-four thousand, four hundred fifty-nine".