68250811 has 4 divisors (see below), whose sum is σ = 68268312. Its totient is φ = 68233312.

The previous prime is 68250799. The next prime is 68250841. The reversal of 68250811 is 11805286.

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 68250811 - 2⁵ = 68250779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68250841) 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, 51 + ... + 11683.

It is an arithmetic number, because the mean of its divisors is an integer number (17067078).

Almost surely, 2^68250811 is an apocalyptic number.

68250811 is a deficient number, since it is larger than the sum of its proper divisors (17501).

68250811 is a wasteful number, since it uses less digits than its factorization.

68250811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17500.

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 68250811 is about 8261.4049047362. The cubic root of 68250811 is about 408.6667199648. Note that the first 3 decimals are identical.

The spelling of 68250811 in words is "sixty-eight million, two hundred fifty thousand, eight hundred eleven".