683966 has 4 divisors (see below), whose sum is σ = 1025952. Its totient is φ = 341982.

The previous prime is 683957. The next prime is 683983. The reversal of 683966 is 669386.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 669386 = 2 ⋅334693.

It is a congruent number.

It is an unprimeable number.

683966 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170990 + ... + 170993.

It is an arithmetic number, because the mean of its divisors is an integer number (256488).

2⁶⁸³⁹⁶⁶ is an apocalyptic number.

683966 is a deficient number, since it is larger than the sum of its proper divisors (341986).

683966 is a wasteful number, since it uses less digits than its factorization.

683966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341985.

The product of its digits is 46656, while the sum is 38.

The square root of 683966 is about 827.0223697096. The cubic root of 683966 is about 88.1072212345.

The spelling of 683966 in words is "six hundred eighty-three thousand, nine hundred sixty-six".