68875191 has 64 divisors (see below), whose sum is σ = 129100800. Its totient is φ = 35691840.

The previous prime is 68875189. The next prime is 68875223. The reversal of 68875191 is 19157886.

It is not a de Polignac number, because 68875191 - 2¹ = 68875189 is a prime.

Its product of digits (120960) is a multiple of the sum of its prime factors (448).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68875181) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 168195 + ... + 168603.

It is an arithmetic number, because the mean of its divisors is an integer number (2017200).

Almost surely, 2^68875191 is an apocalyptic number.

68875191 is a deficient number, since it is larger than the sum of its proper divisors (60225609).

68875191 is an equidigital number, since it uses as much as digits as its factorization.

68875191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448 (or 430 counting only the distinct ones).

The product of its digits is 120960, while the sum is 45.

The square root of 68875191 is about 8299.1078436179. The cubic root of 68875191 is about 409.9091430639.

The spelling of 68875191 in words is "sixty-eight million, eight hundred seventy-five thousand, one hundred ninety-one".