68069311 has 4 divisors (see below), whose sum is σ = 68131800. Its totient is φ = 68006824.

The previous prime is 68069269. The next prime is 68069317. The reversal of 68069311 is 11396086.

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

It is a cyclic number.

It is not a de Polignac number, because 68069311 - 2¹⁵ = 68036543 is a prime.

It is a super-2 number, since 2×68069311² = 9266862200029442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68069317) 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, 29581 + ... + 31798.

It is an arithmetic number, because the mean of its divisors is an integer number (17032950).

Almost surely, 2^68069311 is an apocalyptic number.

68069311 is a deficient number, since it is larger than the sum of its proper divisors (62489).

68069311 is a wasteful number, since it uses less digits than its factorization.

68069311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62488.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 68069311 is about 8250.4127775524. The cubic root of 68069311 is about 408.3041413348.

The spelling of 68069311 in words is "sixty-eight million, sixty-nine thousand, three hundred eleven".