698360121 has 18 divisors (see below), whose sum is σ = 1022820318. Its totient is φ = 459164160.

The previous prime is 698360111. The next prime is 698360191. The reversal of 698360121 is 121063896.

It can be written as a sum of positive squares in 3 ways, for example, as 280730025 + 417630096 = 16755^2 + 20436^2 .

It is a de Polignac number, because none of the positive numbers 2^k-698360121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (698360111) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 40681 + ... + 55241.

It is an arithmetic number, because the mean of its divisors is an integer number (56823351).

Almost surely, 2^698360121 is an apocalyptic number.

It is an amenable number.

698360121 is a deficient number, since it is larger than the sum of its proper divisors (324460197).

698360121 is a wasteful number, since it uses less digits than its factorization.

698360121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14713 (or 14637 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 698360121 is about 26426.5041388376. The cubic root of 698360121 is about 887.2101000119.

The spelling of 698360121 in words is "six hundred ninety-eight million, three hundred sixty thousand, one hundred twenty-one".