68393871 has 72 divisors (see below), whose sum is σ = 127012704. Its totient is φ = 34525440.

The previous prime is 68393807. The next prime is 68393887. The reversal of 68393871 is 17839386.

It is a happy number.

It is not a de Polignac number, because 68393871 - 2⁶ = 68393807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68393891) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1121181 + ... + 1121241.

Almost surely, 2^68393871 is an apocalyptic number.

68393871 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

68393871 is a deficient number, since it is larger than the sum of its proper divisors (58618833).

68393871 is a wasteful number, since it uses less digits than its factorization.

68393871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161 (or 121 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 68393871 is about 8270.0587059585. The cubic root of 68393871 is about 408.9520550841.

The spelling of 68393871 in words is "sixty-eight million, three hundred ninety-three thousand, eight hundred seventy-one".