694385 has 8 divisors (see below), whose sum is σ = 841320. Its totient is φ = 550144.

The previous prime is 694381. The next prime is 694387. The reversal of 694385 is 583496.

It can be written as a sum of positive squares in 4 ways, for example, as 73441 + 620944 = 271^2 + 788^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 694385 - 2² = 694381 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a nialpdrome in base 16.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 694385.

It is not an unprimeable number, because it can be changed into a prime (694381) 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, 50 + ... + 1179.

It is an arithmetic number, because the mean of its divisors is an integer number (105165).

2⁶⁹⁴³⁸⁵ is an apocalyptic number.

It is an amenable number.

694385 is a deficient number, since it is larger than the sum of its proper divisors (146935).

694385 is a wasteful number, since it uses less digits than its factorization.

694385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1347.

The product of its digits is 25920, while the sum is 35.

The square root of 694385 is about 833.2976659034. The cubic root of 694385 is about 88.5523539272.

Subtracting from 694385 its reverse (583496), we obtain a square (110889 = 333²).

The spelling of 694385 in words is "six hundred ninety-four thousand, three hundred eighty-five".