68256763 has 4 divisors (see below), whose sum is σ = 68437240. Its totient is φ = 68076288.

The previous prime is 68256707. The next prime is 68256767. The reversal of 68256763 is 36765286.

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 68256763 - 2¹⁷ = 68125691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68256767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89670 + ... + 90427.

It is an arithmetic number, because the mean of its divisors is an integer number (17109310).

Almost surely, 2^68256763 is an apocalyptic number.

68256763 is a deficient number, since it is larger than the sum of its proper divisors (180477).

68256763 is a wasteful number, since it uses less digits than its factorization.

68256763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180476.

The product of its digits is 362880, while the sum is 43.

The square root of 68256763 is about 8261.7651261701. The cubic root of 68256763 is about 408.6785992552.

The spelling of 68256763 in words is "sixty-eight million, two hundred fifty-six thousand, seven hundred sixty-three".