698117980 has 96 divisors (see below), whose sum is σ = 1720986624. Its totient is φ = 232948224.

The previous prime is 698117963. The next prime is 698117993. The reversal of 698117980 is 89711896.

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 31 ways as a sum of consecutive naturals, for example, 847849 + ... + 848671.

It is an arithmetic number, because the mean of its divisors is an integer number (17926944).

Almost surely, 2^698117980 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 698117980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (860493312).

698117980 is an abundant number, since it is smaller than the sum of its proper divisors (1022868644).

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

698117980 is a wasteful number, since it uses less digits than its factorization.

698117980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995 (or 993 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 49.

The square root of 698117980 is about 26421.9223373319. The cubic root of 698117980 is about 887.1075479673.

The spelling of 698117980 in words is "six hundred ninety-eight million, one hundred seventeen thousand, nine hundred eighty".