68318263 has 4 divisors (see below), whose sum is σ = 73573528. Its totient is φ = 63063000.

The previous prime is 68318251. The next prime is 68318279. The reversal of 68318263 is 36281386.

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

It is not a de Polignac number, because 68318263 - 2¹³ = 68310071 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 (68318363) 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, 2627613 + ... + 2627638.

It is an arithmetic number, because the mean of its divisors is an integer number (18393382).

Almost surely, 2^68318263 is an apocalyptic number.

68318263 is a deficient number, since it is larger than the sum of its proper divisors (5255265).

68318263 is a wasteful number, since it uses less digits than its factorization.

68318263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5255264.

The product of its digits is 41472, while the sum is 37.

The square root of 68318263 is about 8265.4862530888. The cubic root of 68318263 is about 408.8013035263.

The spelling of 68318263 in words is "sixty-eight million, three hundred eighteen thousand, two hundred sixty-three".