698139 has 36 divisors (see below), whose sum is σ = 1199016. Its totient is φ = 404352.

The previous prime is 698111. The next prime is 698171. The reversal of 698139 is 931896.

It is not a de Polignac number, because 698139 - 2¹⁷ = 567067 is a prime.

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 698139.

It is not an unprimeable number, because it can be changed into a prime (698039) 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 in 35 ways as a sum of consecutive naturals, for example, 41059 + ... + 41075.

It is an arithmetic number, because the mean of its divisors is an integer number (33306).

2⁶⁹⁸¹³⁹ is an apocalyptic number.

698139 is a deficient number, since it is larger than the sum of its proper divisors (500877).

698139 is a wasteful number, since it uses less digits than its factorization.

698139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58 (or 33 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 698139 is about 835.5471261395. The cubic root of 698139 is about 88.7116451340.

The spelling of 698139 in words is "six hundred ninety-eight thousand, one hundred thirty-nine".