68424971 has 4 divisors (see below), whose sum is σ = 68724000. Its totient is φ = 68125944.

The previous prime is 68424959. The next prime is 68424991. The reversal of 68424971 is 17942486.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17942486 = 2 ⋅8971243.

It is a cyclic number.

It is not a de Polignac number, because 68424971 - 2⁶ = 68424907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68424991) 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, 149171 + ... + 149628.

It is an arithmetic number, because the mean of its divisors is an integer number (17181000).

Almost surely, 2^68424971 is an apocalyptic number.

68424971 is a deficient number, since it is larger than the sum of its proper divisors (299029).

68424971 is a wasteful number, since it uses less digits than its factorization.

68424971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299028.

The product of its digits is 96768, while the sum is 41.

The square root of 68424971 is about 8271.9387691157. The cubic root of 68424971 is about 409.0140317956.

The spelling of 68424971 in words is "sixty-eight million, four hundred twenty-four thousand, nine hundred seventy-one".