71983673 has 4 divisors (see below), whose sum is σ = 72345600. Its totient is φ = 71621748.

The previous prime is 71983669. The next prime is 71983679. The reversal of 71983673 is 37638917.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 71983673 - 2² = 71983669 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71983679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180665 + ... + 181062.

It is an arithmetic number, because the mean of its divisors is an integer number (18086400).

Almost surely, 2^71983673 is an apocalyptic number.

It is an amenable number.

71983673 is a deficient number, since it is larger than the sum of its proper divisors (361927).

71983673 is a wasteful number, since it uses less digits than its factorization.

71983673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361926.

The product of its digits is 190512, while the sum is 44.

The square root of 71983673 is about 8484.3192419899. The cubic root of 71983673 is about 415.9853163734.

The spelling of 71983673 in words is "seventy-one million, nine hundred eighty-three thousand, six hundred seventy-three".