694689 has 4 divisors (see below), whose sum is σ = 926256. Its totient is φ = 463124.

The previous prime is 694651. The next prime is 694717. The reversal of 694689 is 986496.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 694689 - 2¹¹ = 692641 is a prime.

It is an Ulam number.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 694689.

It is not an unprimeable number, because it can be changed into a prime (694609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115779 + ... + 115784.

It is an arithmetic number, because the mean of its divisors is an integer number (231564).

2⁶⁹⁴⁶⁸⁹ is an apocalyptic number.

It is an amenable number.

694689 is a deficient number, since it is larger than the sum of its proper divisors (231567).

694689 is a wasteful number, since it uses less digits than its factorization.

694689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231566.

The product of its digits is 93312, while the sum is 42.

The square root of 694689 is about 833.4800537505. The cubic root of 694689 is about 88.5652747075.

The spelling of 694689 in words is "six hundred ninety-four thousand, six hundred eighty-nine".