68235871 has 16 divisors (see below), whose sum is σ = 78174720. Its totient is φ = 58954720.

The previous prime is 68235863. The next prime is 68235889. The reversal of 68235871 is 17853286.

It is not a de Polignac number, because 68235871 - 2³ = 68235863 is a prime.

It is a super-2 number, since 2×68235871² = 9312268182257282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68235851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42990 + ... + 44548.

It is an arithmetic number, because the mean of its divisors is an integer number (4885920).

Almost surely, 2^68235871 is an apocalyptic number.

68235871 is a deficient number, since it is larger than the sum of its proper divisors (9938849).

68235871 is a wasteful number, since it uses less digits than its factorization.

68235871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1766.

The product of its digits is 80640, while the sum is 40.

The square root of 68235871 is about 8260.5006506870. The cubic root of 68235871 is about 408.6368989450.

The spelling of 68235871 in words is "sixty-eight million, two hundred thirty-five thousand, eight hundred seventy-one".