71885923 has 4 divisors (see below), whose sum is σ = 72693720. Its totient is φ = 71078128.

The previous prime is 71885903. The next prime is 71885927. The reversal of 71885923 is 32958817.

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 71885923 - 2¹³ = 71877731 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71885923.

It is not an unprimeable number, because it can be changed into a prime (71885927) 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, 403765 + ... + 403942.

It is an arithmetic number, because the mean of its divisors is an integer number (18173430).

Almost surely, 2^71885923 is an apocalyptic number.

71885923 is a deficient number, since it is larger than the sum of its proper divisors (807797).

71885923 is an equidigital number, since it uses as much as digits as its factorization.

71885923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 807796.

The product of its digits is 120960, while the sum is 43.

The square root of 71885923 is about 8478.5566578280. The cubic root of 71885923 is about 415.7969357645.

The spelling of 71885923 in words is "seventy-one million, eight hundred eighty-five thousand, nine hundred twenty-three".