698680388 has 48 divisors (see below), whose sum is σ = 1488721920. Its totient is φ = 280239264.

The previous prime is 698680379. The next prime is 698680393. The reversal of 698680388 is 883086896.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36245 + ... + 52067.

It is an arithmetic number, because the mean of its divisors is an integer number (31015040).

Almost surely, 2^698680388 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 698680388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (744360960).

698680388 is an abundant number, since it is smaller than the sum of its proper divisors (790041532).

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

698680388 is a wasteful number, since it uses less digits than its factorization.

698680388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15936 (or 15934 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 56.

The square root of 698680388 is about 26432.5630236646. The cubic root of 698680388 is about 887.3457037325.

The spelling of 698680388 in words is "six hundred ninety-eight million, six hundred eighty thousand, three hundred eighty-eight".