698839680 has 512 divisors, whose sum is σ = 2890598400. Its totient is φ = 139345920.

The previous prime is 698839649. The next prime is 698839693. The reversal of 698839680 is 86938896.

It is a self number, because there is not a number n which added to its sum of digits gives 698839680.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4287279 + ... + 4287441.

It is an arithmetic number, because the mean of its divisors is an integer number (5645700).

Almost surely, 2^698839680 is an apocalyptic number.

698839680 is a gapful number since it is divisible by the number (60) 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 698839680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1445299200).

698839680 is an abundant number, since it is smaller than the sum of its proper divisors (2191758720).

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

698839680 is a wasteful number, since it uses less digits than its factorization.

698839680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232 (or 220 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 57.

The square root of 698839680 is about 26435.5760292830. The cubic root of 698839680 is about 887.4131338640.

The spelling of 698839680 in words is "six hundred ninety-eight million, eight hundred thirty-nine thousand, six hundred eighty".