698729 has 2 divisors, whose sum is σ = 698730. Its totient is φ = 698728.

The previous prime is 698723. The next prime is 698773. The reversal of 698729 is 927896.

698729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 565504 + 133225 = 752^2 + 365^2 .

It is a cyclic number.

It is not a de Polignac number, because 698729 - 2⁴ = 698713 is a prime.

It is a Chen prime.

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

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 698729.

It is not a weakly prime, because it can be changed into another prime (698723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349364 + 349365.

It is an arithmetic number, because the mean of its divisors is an integer number (349365).

2⁶⁹⁸⁷²⁹ is an apocalyptic number.

It is an amenable number.

698729 is a deficient number, since it is larger than the sum of its proper divisors (1).

698729 is an equidigital number, since it uses as much as digits as its factorization.

698729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 41.

The square root of 698729 is about 835.9001136500. The cubic root of 698729 is about 88.7366282836.

The spelling of 698729 in words is "six hundred ninety-eight thousand, seven hundred twenty-nine".