698745406121 has 24 divisors (see below), whose sum is σ = 859511116800. Its totient is φ = 565467739200.

The previous prime is 698745406109. The next prime is 698745406129. The reversal of 698745406121 is 121604547896.

It is a happy number.

It is not a de Polignac number, because 698745406121 - 2²⁶ = 698678297257 is a prime.

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (698745406129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5547521 + ... + 5672078.

It is an arithmetic number, because the mean of its divisors is an integer number (35812963200).

Almost surely, 2^698745406121 is an apocalyptic number.

It is an amenable number.

698745406121 is a deficient number, since it is larger than the sum of its proper divisors (160765710679).

698745406121 is a wasteful number, since it uses less digits than its factorization.

698745406121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11219685 (or 11219678 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 53.

The spelling of 698745406121 in words is "six hundred ninety-eight billion, seven hundred forty-five million, four hundred six thousand, one hundred twenty-one".