673491 has 16 divisors (see below), whose sum is σ = 1105664. Its totient is φ = 355104.

The previous prime is 673487. The next prime is 673499. The reversal of 673491 is 194376.

It is a happy number.

673491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 673491 - 2² = 673487 is a prime.

It is not an unprimeable number, because it can be changed into a prime (673499) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 961 + ... + 1506.

It is an arithmetic number, because the mean of its divisors is an integer number (69104).

2⁶⁷³⁴⁹¹ is an apocalyptic number.

673491 is a deficient number, since it is larger than the sum of its proper divisors (432173).

673491 is a wasteful number, since it uses less digits than its factorization.

673491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2490.

The product of its digits is 4536, while the sum is 30.

The square root of 673491 is about 820.6649742739. The cubic root of 673491 is about 87.6551153335.

The spelling of 673491 in words is "six hundred seventy-three thousand, four hundred ninety-one".