683634 has 32 divisors (see below), whose sum is σ = 1604736. Its totient is φ = 190080.

The previous prime is 683603. The next prime is 683651. The reversal of 683634 is 436386.

It is an unprimeable number.

683634 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1524 + ... + 1920.

It is an arithmetic number, because the mean of its divisors is an integer number (50148).

2⁶⁸³⁶³⁴ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 683634, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (802368).

683634 is an abundant number, since it is smaller than the sum of its proper divisors (921102).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

683634 is a wasteful number, since it uses less digits than its factorization.

683634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450.

The product of its digits is 10368, while the sum is 30.

The square root of 683634 is about 826.8216252615. The cubic root of 683634 is about 88.0929630542.

The spelling of 683634 in words is "six hundred eighty-three thousand, six hundred thirty-four".