698745406122 has 16 divisors (see below), whose sum is σ = 1552767569280. Its totient is φ = 232915135356.

The previous prime is 698745406109. The next prime is 698745406129. The reversal of 698745406122 is 221604547896.

698745406122 is a `hidden beast` number, since 6 + 9 + 8 + 74 + 540 + 6 + 1 + 22 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 12939729743 = 698745406122 / (6 + 9 + 8 + 7 + 4 + 5 + 4 + 0 + 6 + 1 + 2 + 2).

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 7 ways as a sum of consecutive naturals, for example, 6469864818 + ... + 6469864925.

It is an arithmetic number, because the mean of its divisors is an integer number (97047973080).

Almost surely, 2^698745406122 is an apocalyptic number.

698745406122 is an abundant number, since it is smaller than the sum of its proper divisors (854022163158).

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

698745406122 is a wasteful number, since it uses less digits than its factorization.

698745406122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12939729754 (or 12939729748 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 54.

The spelling of 698745406122 in words is "six hundred ninety-eight billion, seven hundred forty-five million, four hundred six thousand, one hundred twenty-two".