68099085 has 24 divisors (see below), whose sum is σ = 118665144. Its totient is φ = 36126720.

The previous prime is 68099081. The next prime is 68099107. The reversal of 68099085 is 58099086.

It can be written as a sum of positive squares in 4 ways, for example, as 826281 + 67272804 = 909^2 + 8202^2 .

It is not a de Polignac number, because 68099085 - 2² = 68099081 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 68099085.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68099081) 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 23 ways as a sum of consecutive naturals, for example, 4765 + ... + 12605.

It is an arithmetic number, because the mean of its divisors is an integer number (4944381).

Almost surely, 2^68099085 is an apocalyptic number.

It is an amenable number.

68099085 is a deficient number, since it is larger than the sum of its proper divisors (50566059).

68099085 is a wasteful number, since it uses less digits than its factorization.

68099085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8045 (or 8042 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 68099085 is about 8252.2169748498. The cubic root of 68099085 is about 408.3636643673.

Subtracting from 68099085 its reverse (58099086), we obtain a palindrome (9999999).

The spelling of 68099085 in words is "sixty-eight million, ninety-nine thousand, eighty-five".