673745 has 12 divisors (see below), whose sum is σ = 839604. Its totient is φ = 518880.

The previous prime is 673669. The next prime is 673747. The reversal of 673745 is 547376.

673745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 108241 + 565504 = 329^2 + 752^2 .

It is not a de Polignac number, because 673745 - 2¹² = 669649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (673747) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11015 + ... + 11075.

It is an arithmetic number, because the mean of its divisors is an integer number (69967).

2⁶⁷³⁷⁴⁵ is an apocalyptic number.

It is an amenable number.

673745 is a deficient number, since it is larger than the sum of its proper divisors (165859).

673745 is an equidigital number, since it uses as much as digits as its factorization.

673745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160 (or 113 counting only the distinct ones).

The product of its digits is 17640, while the sum is 32.

The square root of 673745 is about 820.8197122389. The cubic root of 673745 is about 87.6661333481. Note that the first 3 decimals are identical.

The spelling of 673745 in words is "six hundred seventy-three thousand, seven hundred forty-five".