673281 has 12 divisors (see below), whose sum is σ = 1111552. Its totient is φ = 384696.

The previous prime is 673273. The next prime is 673291. The reversal of 673281 is 182376.

It is not a de Polignac number, because 673281 - 2³ = 673273 is a prime.

It is a super-2 number, since 2×673281² = 906614609922, which contains 22 as substring.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 673281.

It is not an unprimeable number, because it can be changed into a prime (673201) 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, 5281 + ... + 5406.

2⁶⁷³²⁸¹ is an apocalyptic number.

It is an amenable number.

673281 is a deficient number, since it is larger than the sum of its proper divisors (438271).

673281 is a wasteful number, since it uses less digits than its factorization.

673281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10700 (or 10697 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 673281 is about 820.5370192746. The cubic root of 673281 is about 87.6460038592.

The spelling of 673281 in words is "six hundred seventy-three thousand, two hundred eighty-one".