683918 has 4 divisors (see below), whose sum is σ = 1025880. Its totient is φ = 341958.

The previous prime is 683911. The next prime is 683923. The reversal of 683918 is 819386.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 819386 = 2 ⋅409693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (683911) by changing a digit.

683918 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, 170978 + ... + 170981.

It is an arithmetic number, because the mean of its divisors is an integer number (256470).

2⁶⁸³⁹¹⁸ is an apocalyptic number.

683918 is a deficient number, since it is larger than the sum of its proper divisors (341962).

683918 is a wasteful number, since it uses less digits than its factorization.

683918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341961.

The product of its digits is 10368, while the sum is 35.

The square root of 683918 is about 826.9933494291. The cubic root of 683918 is about 88.1051600962.

The spelling of 683918 in words is "six hundred eighty-three thousand, nine hundred eighteen".