673530 has 64 divisors (see below), whose sum is σ = 1911168. Its totient is φ = 149760.

The previous prime is 673529. The next prime is 673549. The reversal of 673530 is 35376.

It is a self number, because there is not a number n which added to its sum of digits gives 673530.

It is a congruent number.

It is an unprimeable 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 31 ways as a sum of consecutive naturals, for example, 4212 + ... + 4368.

It is an arithmetic number, because the mean of its divisors is an integer number (29862).

2⁶⁷³⁵³⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 673530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (955584).

673530 is an abundant number, since it is smaller than the sum of its proper divisors (1237638).

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

673530 is a wasteful number, since it uses less digits than its factorization.

673530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191.

The product of its (nonzero) digits is 1890, while the sum is 24.

The square root of 673530 is about 820.6887351487. The cubic root of 673530 is about 87.6568072559.

It can be divided in two parts, 6 and 73530, that added together give a triangular number (73536 = T₃₈₃).

The spelling of 673530 in words is "six hundred seventy-three thousand, five hundred thirty".