90698111066 has 16 divisors (see below), whose sum is σ = 136875742056. Its totient is φ = 45073637376.

The previous prime is 90698111057. The next prime is 90698111069. The reversal of 90698111066 is 66011189609.

It can be written as a sum of positive squares in 4 ways, for example, as 90670243225 + 27867841 = 301115^2 + 5279^2 .

It is a super-2 number, since 2×90698111066² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 90698111066.

It is not an unprimeable number, because it can be changed into a prime (90698111069) 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, 41840 + ... + 427956.

Almost surely, 2^90698111066 is an apocalyptic number.

90698111066 is a deficient number, since it is larger than the sum of its proper divisors (46177630990).

90698111066 is a wasteful number, since it uses less digits than its factorization.

90698111066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386833.

The product of its (nonzero) digits is 139968, while the sum is 47.

The spelling of 90698111066 in words is "ninety billion, six hundred ninety-eight million, one hundred eleven thousand, sixty-six".