689120110202002 has 24 divisors (see below), whose sum is σ = 1098068070959460. Its totient is φ = 324289914021120.

The previous prime is 689120110201981. The next prime is 689120110202057. The reversal of 689120110202002 is 200202011021986.

It can be written as a sum of positive squares in 6 ways, for example, as 495007811010441 + 194112299191561 = 22248771^2 + 13932419^2 .

It is a super-2 number, since 2×689120110202002² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

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 11 ways as a sum of consecutive naturals, for example, 97636624 + ... + 104456452.

Almost surely, 2^{689120110202002} is an apocalyptic number.

689120110202002 is a deficient number, since it is larger than the sum of its proper divisors (408947960757458).

689120110202002 is a wasteful number, since it uses less digits than its factorization.

689120110202002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6994686 (or 6994669 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 34.

Adding to 689120110202002 its reverse (200202011021986), we get a palindrome (889322121223988).

The spelling of 689120110202002 in words is "six hundred eighty-nine trillion, one hundred twenty billion, one hundred ten million, two hundred two thousand, two".