1673563 has 2 divisors, whose sum is σ = 1673564. Its totient is φ = 1673562.

The previous prime is 1673543. The next prime is 1673569. The reversal of 1673563 is 3653761.

It is a strong prime.

It is an emirp because it is prime and its reverse (3653761) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1673563 is a prime.

It is a super-2 number, since 2×1673563² = 5601626229938, which contains 22 as substring.

It is a d-powerful number, because it can be written as 1 + 6 + 7³ + 3⁶ + 5⁷ + 6² + 3¹³ .

1673563 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1673569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 836781 + 836782.

It is an arithmetic number, because the mean of its divisors is an integer number (836782).

2^1673563 is an apocalyptic number.

1673563 is a deficient number, since it is larger than the sum of its proper divisors (1).

1673563 is an equidigital number, since it uses as much as digits as its factorization.

1673563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11340, while the sum is 31.

The square root of 1673563 is about 1293.6626299001. The cubic root of 1673563 is about 118.7264152608.

The spelling of 1673563 in words is "one million, six hundred seventy-three thousand, five hundred sixty-three".