68445811 has 4 divisors (see below), whose sum is σ = 78223792. Its totient is φ = 58667832.

The previous prime is 68445803. The next prime is 68445827. The reversal of 68445811 is 11854486.

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 68445811 - 2³ = 68445803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68445911) 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, 4888980 + ... + 4888993.

It is an arithmetic number, because the mean of its divisors is an integer number (19555948).

Almost surely, 2^68445811 is an apocalyptic number.

68445811 is a deficient number, since it is larger than the sum of its proper divisors (9777981).

68445811 is an equidigital number, since it uses as much as digits as its factorization.

68445811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9777980.

The product of its digits is 30720, while the sum is 37.

The square root of 68445811 is about 8273.1983537203. The cubic root of 68445811 is about 409.0555516632.

The spelling of 68445811 in words is "sixty-eight million, four hundred forty-five thousand, eight hundred eleven".