1694 has 12 divisors (see below), whose sum is σ = 3192. Its totient is φ = 660.
The previous prime is 1693. The next prime is 1697. The reversal of 1694 is 4961.
1694 is nontrivially palindromic in base 3.
1694 is an esthetic number in base 5, because in such base its adjacent digits differ by 1.
It is an alternating number because its digits alternate between odd and even.
It is a Curzon number.
It is a plaindrome in base 15 and base 16.
It is a nialpdrome in base 12.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1693) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 149 + ... + 159.
It is an arithmetic number, because the mean of its divisors is an integer number (266).
1694 is a gapful number since it is divisible by the number (14) formed by its first and last digit.
1694 is a deficient number, since it is larger than the sum of its proper divisors (1498).
1694 is a wasteful number, since it uses less digits than its factorization.
1694 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 31 (or 20 counting only the distinct ones).
The product of its digits is 216, while the sum is 20.
The square root of 1694 is about 41.1582312545. The cubic root of 1694 is about 11.9207743893.
It can be divided in two parts, 169 and 4, that multiplied together give a palindrome (676).
The spelling of 1694 in words is "one thousand, six hundred ninety-four".
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