68407871 has 18 divisors (see below), whose sum is σ = 81041688. Its totient is φ = 57574440.

The previous prime is 68407849. The next prime is 68407891. The reversal of 68407871 is 17870486.

It is not a de Polignac number, because 68407871 - 2²⁶ = 1299007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68407811) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 219806 + ... + 220116.

It is an arithmetic number, because the mean of its divisors is an integer number (4502316).

Almost surely, 2^68407871 is an apocalyptic number.

68407871 is a deficient number, since it is larger than the sum of its proper divisors (12633817).

68407871 is an equidigital number, since it uses as much as digits as its factorization.

68407871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459 (or 385 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 41.

The square root of 68407871 is about 8270.9050895292. The cubic root of 68407871 is about 408.9799568931.

The spelling of 68407871 in words is "sixty-eight million, four hundred seven thousand, eight hundred seventy-one".