68732289 has 12 divisors (see below), whose sum is σ = 99716500. Its totient is φ = 45620064.

The previous prime is 68732269. The next prime is 68732311. The reversal of 68732289 is 98223786.

It can be written as a sum of positive squares in 2 ways, for example, as 65610000 + 3122289 = 8100^2 + 1767^2 .

It is not a de Polignac number, because 68732289 - 2⁸ = 68732033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68732269) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14614 + ... + 18735.

Almost surely, 2^68732289 is an apocalyptic number.

It is an amenable number.

68732289 is a deficient number, since it is larger than the sum of its proper divisors (30984211).

68732289 is a wasteful number, since it uses less digits than its factorization.

68732289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33584 (or 33581 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 68732289 is about 8290.4938936109. The cubic root of 68732289 is about 409.6254540996.

The spelling of 68732289 in words is "sixty-eight million, seven hundred thirty-two thousand, two hundred eighty-nine".