68311286 has 4 divisors (see below), whose sum is σ = 102466932. Its totient is φ = 34155642.

The previous prime is 68311279. The next prime is 68311307. The reversal of 68311286 is 68211386.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68211386 = 2 ⋅34105693.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17077820 + ... + 17077823.

It is an arithmetic number, because the mean of its divisors is an integer number (25616733).

Almost surely, 2^68311286 is an apocalyptic number.

68311286 is a deficient number, since it is larger than the sum of its proper divisors (34155646).

68311286 is a wasteful number, since it uses less digits than its factorization.

68311286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34155645.

The product of its digits is 13824, while the sum is 35.

The square root of 68311286 is about 8265.0641860787. The cubic root of 68311286 is about 408.7873867800.

The spelling of 68311286 in words is "sixty-eight million, three hundred eleven thousand, two hundred eighty-six".