694645 has 16 divisors (see below), whose sum is σ = 967680. Its totient is φ = 468864.

The previous prime is 694633. The next prime is 694649. The reversal of 694645 is 546496.

It is a cyclic number.

It is not a de Polignac number, because 694645 - 2¹³ = 686453 is a prime.

Its product of digits (25920) is a multiple of the sum of its prime divisors (324).

It is a plaindrome in base 9.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 694645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (694649) 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 15 ways as a sum of consecutive naturals, for example, 3004 + ... + 3226.

It is an arithmetic number, because the mean of its divisors is an integer number (60480).

2⁶⁹⁴⁶⁴⁵ is an apocalyptic number.

It is an amenable number.

694645 is a deficient number, since it is larger than the sum of its proper divisors (273035).

694645 is a wasteful number, since it uses less digits than its factorization.

694645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324.

The product of its digits is 25920, while the sum is 34.

The square root of 694645 is about 833.4536579799. The cubic root of 694645 is about 88.5634048279.

The spelling of 694645 in words is "six hundred ninety-four thousand, six hundred forty-five".