698278 has 8 divisors (see below), whose sum is σ = 1197072. Its totient is φ = 299256.

The previous prime is 698273. The next prime is 698287. The reversal of 698278 is 872896.

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

It is a self number, because there is not a number n which added to its sum of digits gives 698278.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (698273) by changing a digit.

698278 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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24925 + ... + 24952.

It is an arithmetic number, because the mean of its divisors is an integer number (149634).

2⁶⁹⁸²⁷⁸ is an apocalyptic number.

698278 is a deficient number, since it is larger than the sum of its proper divisors (498794).

698278 is a wasteful number, since it uses less digits than its factorization.

698278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49886.

The product of its digits is 48384, while the sum is 40.

The square root of 698278 is about 835.6303010303. The cubic root of 698278 is about 88.7175322617.

The spelling of 698278 in words is "six hundred ninety-eight thousand, two hundred seventy-eight".