698961573122 has 18 divisors (see below), whose sum is σ = 1096051385667. Its totient is φ = 334272964036.

The previous prime is 698961573041. The next prime is 698961573139. The reversal of 698961573122 is 221375169896.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 349480786561 + 349480786561 = 591169^2 + 591169^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=591169.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 27180923 + ... + 27206625.

Almost surely, 2^698961573122 is an apocalyptic number.

698961573122 is a deficient number, since it is larger than the sum of its proper divisors (397089812545).

698961573122 is an frugal number, since it uses more digits than its factorization.

698961573122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51454 (or 25728 counting only the distinct ones).

The product of its digits is 9797760, while the sum is 59.

The spelling of 698961573122 in words is "six hundred ninety-eight billion, nine hundred sixty-one million, five hundred seventy-three thousand, one hundred twenty-two".