71668383 has 4 divisors (see below), whose sum is σ = 95557848. Its totient is φ = 47778920.

The previous prime is 71668343. The next prime is 71668393. The reversal of 71668383 is 38386617.

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 71668383 - 2¹² = 71664287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71668343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11944728 + ... + 11944733.

It is an arithmetic number, because the mean of its divisors is an integer number (23889462).

Almost surely, 2^71668383 is an apocalyptic number.

71668383 is a deficient number, since it is larger than the sum of its proper divisors (23889465).

71668383 is a wasteful number, since it uses less digits than its factorization.

71668383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23889464.

The product of its digits is 145152, while the sum is 42.

The square root of 71668383 is about 8465.7181030318. The cubic root of 71668383 is about 415.3770860116.

The spelling of 71668383 in words is "seventy-one million, six hundred sixty-eight thousand, three hundred eighty-three".