695644 has 12 divisors (see below), whose sum is σ = 1237768. Its totient is φ = 342000.

The previous prime is 695641. The next prime is 695659. The reversal of 695644 is 446596.

It is a d-powerful number, because it can be written as 6 + 9⁵ + 6⁷ + 5⁷ + 4⁷ + 4⁹ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (695641) 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, 1182 + ... + 1669.

2⁶⁹⁵⁶⁴⁴ is an apocalyptic number.

It is an amenable number.

695644 is a deficient number, since it is larger than the sum of its proper divisors (542124).

695644 is a wasteful number, since it uses less digits than its factorization.

695644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2916 (or 2914 counting only the distinct ones).

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

The square root of 695644 is about 834.0527561252. The cubic root of 695644 is about 88.6058401543.

Subtracting from 695644 its sum of digits (34), we obtain a triangular number (695610 = T₁₁₇₉).

The spelling of 695644 in words is "six hundred ninety-five thousand, six hundred forty-four".