71966917 has 8 divisors (see below), whose sum is σ = 80180352. Its totient is φ = 64032000.

The previous prime is 71966891. The next prime is 71966929.

71966917 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71966917 - 2¹¹ = 71964869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71966417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69084 + ... + 70117.

It is an arithmetic number, because the mean of its divisors is an integer number (10022544).

Almost surely, 2^71966917 is an apocalyptic number.

It is an amenable number.

71966917 is a deficient number, since it is larger than the sum of its proper divisors (8213435).

71966917 is a wasteful number, since it uses less digits than its factorization.

71966917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139259.

The product of its digits is 142884, while the sum is 46.

The square root of 71966917 is about 8483.3317157824. The cubic root of 71966917 is about 415.9530368736.

The spelling of 71966917 in words is "seventy-one million, nine hundred sixty-six thousand, nine hundred seventeen".