698878 has 8 divisors (see below), whose sum is σ = 1093968. Its totient is φ = 334224.

The previous prime is 698849. The next prime is 698891. The reversal of 698878 is 878896.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (46), and also a Moran number because the ratio is a prime number: 15193 = 698878 / (6 + 9 + 8 + 8 + 7 + 8).

It is a congruent number.

It is an unprimeable number.

698878 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7551 + ... + 7642.

It is an arithmetic number, because the mean of its divisors is an integer number (136746).

2⁶⁹⁸⁸⁷⁸ is an apocalyptic number.

698878 is a deficient number, since it is larger than the sum of its proper divisors (395090).

698878 is a wasteful number, since it uses less digits than its factorization.

698878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15218.

The product of its digits is 193536, while the sum is 46.

The square root of 698878 is about 835.9892343804. The cubic root of 698878 is about 88.7429353631.

The spelling of 698878 in words is "six hundred ninety-eight thousand, eight hundred seventy-eight".