698889320768 has 56 divisors (see below), whose sum is σ = 1401515583552. Its totient is φ = 345753391104.

The previous prime is 698889320629. The next prime is 698889320771. The reversal of 698889320768 is 867023988896.

It is a super-2 number, since 2×698889320768² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 698889320695 and 698889320704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28811621 + ... + 28835867.

It is an arithmetic number, because the mean of its divisors is an integer number (25027063992).

Almost surely, 2^698889320768 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 698889320768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (700757791776).

698889320768 is an abundant number, since it is smaller than the sum of its proper divisors (702626262784).

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

698889320768 is a wasteful number, since it uses less digits than its factorization.

698889320768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28999 (or 28989 counting only the distinct ones).

The product of its (nonzero) digits is 501645312, while the sum is 74.

The spelling of 698889320768 in words is "six hundred ninety-eight billion, eight hundred eighty-nine million, three hundred twenty thousand, seven hundred sixty-eight".