698121672 has 32 divisors (see below), whose sum is σ = 1746360000. Its totient is φ = 232566464.

The previous prime is 698121601. The next prime is 698121679. The reversal of 698121672 is 276121896.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (698121679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36454 + ... + 52202.

It is an arithmetic number, because the mean of its divisors is an integer number (54573750).

Almost surely, 2^698121672 is an apocalyptic number.

It is an amenable number.

698121672 is an abundant number, since it is smaller than the sum of its proper divisors (1048238328).

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

698121672 is a wasteful number, since it uses less digits than its factorization.

698121672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17605 (or 17601 counting only the distinct ones).

The product of its digits is 72576, while the sum is 42.

The square root of 698121672 is about 26421.9922034657. The cubic root of 698121672 is about 887.1091117886.

The spelling of 698121672 in words is "six hundred ninety-eight million, one hundred twenty-one thousand, six hundred seventy-two".