698221380 has 48 divisors (see below), whose sum is σ = 1959338304. Its totient is φ = 185781120.

The previous prime is 698221379. The next prime is 698221397. The reversal of 698221380 is 83122896.

It is a happy number.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

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, 15039 + ... + 40281.

It is an arithmetic number, because the mean of its divisors is an integer number (40819548).

Almost surely, 2^698221380 is an apocalyptic number.

698221380 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

698221380 is an abundant number, since it is smaller than the sum of its proper divisors (1261116924).

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

698221380 is a wasteful number, since it uses less digits than its factorization.

698221380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25716 (or 25714 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 698221380 is about 26423.8789733831. The cubic root of 698221380 is about 887.1513430444.

The spelling of 698221380 in words is "six hundred ninety-eight million, two hundred twenty-one thousand, three hundred eighty".