673506 has 48 divisors (see below), whose sum is σ = 1617408. Its totient is φ = 201600.

The previous prime is 673499. The next prime is 673513. The reversal of 673506 is 605376.

It is an interprime number because it is at equal distance from previous prime (673499) and next prime (673513).

It is a super-2 number, since 2×673506² = 907220664072, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 673506.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9451 + ... + 9521.

It is an arithmetic number, because the mean of its divisors is an integer number (33696).

2⁶⁷³⁵⁰⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 673506, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (808704).

673506 is an abundant number, since it is smaller than the sum of its proper divisors (943902).

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

673506 is a wasteful number, since it uses less digits than its factorization.

673506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 673506 is about 820.6741131533. The cubic root of 673506 is about 87.6557660806.

The spelling of 673506 in words is "six hundred seventy-three thousand, five hundred six".