698387 has 2 divisors, whose sum is σ = 698388. Its totient is φ = 698386.

The previous prime is 698371. The next prime is 698393. The reversal of 698387 is 783896.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 698387 - 2⁴ = 698371 is a 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 698387.

It is not a weakly prime, because it can be changed into another prime (698287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349193 + 349194.

It is an arithmetic number, because the mean of its divisors is an integer number (349194).

2⁶⁹⁸³⁸⁷ is an apocalyptic number.

698387 is a deficient number, since it is larger than the sum of its proper divisors (1).

698387 is an equidigital number, since it uses as much as digits as its factorization.

698387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 41.

The square root of 698387 is about 835.6955187148. The cubic root of 698387 is about 88.7221482398.

The spelling of 698387 in words is "six hundred ninety-eight thousand, three hundred eighty-seven".