698023822878 has 24 divisors (see below), whose sum is σ = 1529378042400. Its totient is φ = 230060285664.

The previous prime is 698023822861. The next prime is 698023822883. The reversal of 698023822878 is 878228320896.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 217858518 + ... + 217861721.

It is an arithmetic number, because the mean of its divisors is an integer number (63724085100).

Almost surely, 2^698023822878 is an apocalyptic number.

698023822878 is an abundant number, since it is smaller than the sum of its proper divisors (831354219522).

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

698023822878 is a wasteful number, since it uses less digits than its factorization.

698023822878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435720336 (or 435720333 counting only the distinct ones).

The product of its (nonzero) digits is 37158912, while the sum is 63.

The spelling of 698023822878 in words is "six hundred ninety-eight billion, twenty-three million, eight hundred twenty-two thousand, eight hundred seventy-eight".