68459971 has 4 divisors (see below), whose sum is σ = 68610232. Its totient is φ = 68309712.

The previous prime is 68459933. The next prime is 68460011. The reversal of 68459971 is 17995486.

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 68459971 - 2⁷ = 68459843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68459371) 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, 74445 + ... + 75358.

It is an arithmetic number, because the mean of its divisors is an integer number (17152558).

Almost surely, 2^68459971 is an apocalyptic number.

68459971 is a deficient number, since it is larger than the sum of its proper divisors (150261).

68459971 is a wasteful number, since it uses less digits than its factorization.

68459971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150260.

The product of its digits is 544320, while the sum is 49.

The square root of 68459971 is about 8274.0540849090. The cubic root of 68459971 is about 409.0837580508.

The spelling of 68459971 in words is "sixty-eight million, four hundred fifty-nine thousand, nine hundred seventy-one".