698426064 has 200 divisors, whose sum is σ = 2329100928. Its totient is φ = 197925120.

The previous prime is 698426059. The next prime is 698426087. The reversal of 698426064 is 460624896.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1514794 + ... + 1515254.

Almost surely, 2^698426064 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 698426064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1164550464).

698426064 is an abundant number, since it is smaller than the sum of its proper divisors (1630674864).

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

698426064 is a wasteful number, since it uses less digits than its factorization.

698426064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655 (or 640 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The square root of 698426064 is about 26427.7517772511. The cubic root of 698426064 is about 887.2380242173.

The spelling of 698426064 in words is "six hundred ninety-eight million, four hundred twenty-six thousand, sixty-four".