698808191796 has 144 divisors (see below), whose sum is σ = 2075606140608. Its totient is φ = 195437145600.

The previous prime is 698808191749. The next prime is 698808191801. The reversal of 698808191796 is 697191808896.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 55030920 + ... + 55043616.

It is an arithmetic number, because the mean of its divisors is an integer number (14413931532).

Almost surely, 2^698808191796 is an apocalyptic number.

698808191796 is a gapful number since it is divisible by the number (66) 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 698808191796, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1037803070304).

698808191796 is an abundant number, since it is smaller than the sum of its proper divisors (1376797948812).

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

698808191796 is a wasteful number, since it uses less digits than its factorization.

698808191796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23422 (or 23417 counting only the distinct ones).

The product of its (nonzero) digits is 94058496, while the sum is 72.

The spelling of 698808191796 in words is "six hundred ninety-eight billion, eight hundred eight million, one hundred ninety-one thousand, seven hundred ninety-six".