677543 has 2 divisors, whose sum is σ = 677544. Its totient is φ = 677542.

The previous prime is 677539. The next prime is 677561. The reversal of 677543 is 345776.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 677543 - 2² = 677539 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (677533) 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, 338771 + 338772.

It is an arithmetic number, because the mean of its divisors is an integer number (338772).

2⁶⁷⁷⁵⁴³ is an apocalyptic number.

677543 is a deficient number, since it is larger than the sum of its proper divisors (1).

677543 is an equidigital number, since it uses as much as digits as its factorization.

677543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17640, while the sum is 32.

The square root of 677543 is about 823.1300018831. The cubic root of 677543 is about 87.8305537573.

The spelling of 677543 in words is "six hundred seventy-seven thousand, five hundred forty-three".