698543 has 2 divisors, whose sum is σ = 698544. Its totient is φ = 698542.

The previous prime is 698539. The next prime is 698557. The reversal of 698543 is 345896.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 698543 - 2² = 698539 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (692543) 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, 349271 + 349272.

It is an arithmetic number, because the mean of its divisors is an integer number (349272).

2⁶⁹⁸⁵⁴³ is an apocalyptic number.

698543 is a deficient number, since it is larger than the sum of its proper divisors (1).

698543 is an equidigital number, since it uses as much as digits as its factorization.

698543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 35.

The square root of 698543 is about 835.7888489326. The cubic root of 698543 is about 88.7287537583.

The spelling of 698543 in words is "six hundred ninety-eight thousand, five hundred forty-three".