698179880 has 64 divisors (see below), whose sum is σ = 1606176000. Its totient is φ = 273072384.

The previous prime is 698179873. The next prime is 698179883. The reversal of 698179880 is 88971896.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (698179883) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 343427 + ... + 345453.

It is an arithmetic number, because the mean of its divisors is an integer number (25096500).

Almost surely, 2^698179880 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 698179880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (803088000).

698179880 is an abundant number, since it is smaller than the sum of its proper divisors (907996120).

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

698179880 is a wasteful number, since it uses less digits than its factorization.

698179880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2226 (or 2222 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 56.

The square root of 698179880 is about 26423.0936871518. The cubic root of 698179880 is about 887.1337662360.

It can be divided in two parts, 69817 and 9880, that added together give a palindrome (79697).

The spelling of 698179880 in words is "six hundred ninety-eight million, one hundred seventy-nine thousand, eight hundred eighty".