695643 has 8 divisors (see below), whose sum is σ = 998928. Its totient is φ = 428064.

The previous prime is 695641. The next prime is 695659. The reversal of 695643 is 346596.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 695643 - 2¹ = 695641 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 695643.

It is not an unprimeable number, because it can be changed into a prime (695641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8880 + ... + 8957.

It is an arithmetic number, because the mean of its divisors is an integer number (124866).

2⁶⁹⁵⁶⁴³ is an apocalyptic number.

695643 is a deficient number, since it is larger than the sum of its proper divisors (303285).

695643 is a wasteful number, since it uses less digits than its factorization.

695643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17853.

The product of its digits is 19440, while the sum is 33.

The square root of 695643 is about 834.0521566425. The cubic root of 695643 is about 88.6057976969.

Subtracting from 695643 its sum of digits (33), we obtain a triangular number (695610 = T₁₁₇₉).

The spelling of 695643 in words is "six hundred ninety-five thousand, six hundred forty-three".