698111868 has 72 divisors (see below), whose sum is σ = 1767612672. Its totient is φ = 214305536.

The previous prime is 698111849. The next prime is 698111881. The reversal of 698111868 is 868111896.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 160855 + ... + 165137.

It is an arithmetic number, because the mean of its divisors is an integer number (24550176).

Almost surely, 2^698111868 is an apocalyptic number.

698111868 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 698111868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (883806336).

698111868 is an abundant number, since it is smaller than the sum of its proper divisors (1069500804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

698111868 is a wasteful number, since it uses less digits than its factorization.

698111868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4371 (or 4352 counting only the distinct ones).

The product of its digits is 165888, while the sum is 48.

The square root of 698111868 is about 26421.8066755474. The cubic root of 698111868 is about 887.1049590940.

The spelling of 698111868 in words is "six hundred ninety-eight million, one hundred eleven thousand, eight hundred sixty-eight".