684703 has 4 divisors (see below), whose sum is σ = 720760. Its totient is φ = 648648.

The previous prime is 684683. The next prime is 684713. The reversal of 684703 is 307486.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 307486 = 2 ⋅153743.

It is a cyclic number.

It is not a de Polignac number, because 684703 - 2⁹ = 684191 is a prime.

It is an Ulam number.

It is a Duffinian number.

684703 is a modest number, since divided by 703 gives 684 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18000 + ... + 18037.

It is an arithmetic number, because the mean of its divisors is an integer number (180190).

2⁶⁸⁴⁷⁰³ is an apocalyptic number.

684703 is a deficient number, since it is larger than the sum of its proper divisors (36057).

684703 is a wasteful number, since it uses less digits than its factorization.

684703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36056.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 684703 is about 827.4678241479. The cubic root of 684703 is about 88.1388561952.

The spelling of 684703 in words is "six hundred eighty-four thousand, seven hundred three".