68499311 has 4 divisors (see below), whose sum is σ = 69177624. Its totient is φ = 67821000.

The previous prime is 68499289. The next prime is 68499317. The reversal of 68499311 is 11399486.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68499311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68499317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 339005 + ... + 339206.

It is an arithmetic number, because the mean of its divisors is an integer number (17294406).

Almost surely, 2^68499311 is an apocalyptic number.

68499311 is a deficient number, since it is larger than the sum of its proper divisors (678313).

68499311 is a wasteful number, since it uses less digits than its factorization.

68499311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678312.

The product of its digits is 46656, while the sum is 41.

The square root of 68499311 is about 8276.4310545065. The cubic root of 68499311 is about 409.1621019996.

The spelling of 68499311 in words is "sixty-eight million, four hundred ninety-nine thousand, three hundred eleven".