1673543 has 2 divisors, whose sum is σ = 1673544. Its totient is φ = 1673542.

The previous prime is 1673527. The next prime is 1673563. The reversal of 1673543 is 3453761.

It is a weak prime.

It is an emirp because it is prime and its reverse (3453761) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1673543 - 2⁴ = 1673527 is a prime.

It is a Sophie Germain prime.

It is a d-powerful number, because it can be written as 1 + 6² + 7 + 3³ + 5⁷ + 4⁵ + 3¹³ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1673513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 836771 + 836772.

It is an arithmetic number, because the mean of its divisors is an integer number (836772).

2^1673543 is an apocalyptic number.

1673543 is a deficient number, since it is larger than the sum of its proper divisors (1).

1673543 is an equidigital number, since it uses as much as digits as its factorization.

1673543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 29.

The square root of 1673543 is about 1293.6548998864. The cubic root of 1673543 is about 118.7259423102.

The spelling of 1673543 in words is "one million, six hundred seventy-three thousand, five hundred forty-three".