673381 has 2 divisors, whose sum is σ = 673382. Its totient is φ = 673380.

The previous prime is 673349. The next prime is 673391. The reversal of 673381 is 183376.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 370881 + 302500 = 609^2 + 550^2 .

It is a cyclic number.

It is not a de Polignac number, because 673381 - 2⁵ = 673349 is a prime.

It is a super-2 number, since 2×673381² = 906883942322, which contains 22 as substring.

It is a Chen prime.

It is a pancake number, because a pancake can be divided into 673381 parts by 1160 straight cuts.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (673391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336690 + 336691.

It is an arithmetic number, because the mean of its divisors is an integer number (336691).

2⁶⁷³³⁸¹ is an apocalyptic number.

It is an amenable number.

673381 is a deficient number, since it is larger than the sum of its proper divisors (1).

673381 is an equidigital number, since it uses as much as digits as its factorization.

673381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 28.

The square root of 673381 is about 820.5979527150. The cubic root of 673381 is about 87.6503428928.

The spelling of 673381 in words is "six hundred seventy-three thousand, three hundred eighty-one".