71960019 has 4 divisors (see below), whose sum is σ = 95946696. Its totient is φ = 47973344.

The previous prime is 71959981. The next prime is 71960029. The reversal of 71960019 is 91006917.

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 71960019 - 2⁹ = 71959507 is a prime.

It is a super-2 number, since 2×71960019² = 10356488668960722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71960029) 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, 11993334 + ... + 11993339.

It is an arithmetic number, because the mean of its divisors is an integer number (23986674).

Almost surely, 2^71960019 is an apocalyptic number.

71960019 is a deficient number, since it is larger than the sum of its proper divisors (23986677).

71960019 is a wasteful number, since it uses less digits than its factorization.

71960019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23986676.

The product of its (nonzero) digits is 3402, while the sum is 33.

The square root of 71960019 is about 8482.9251440762. The cubic root of 71960019 is about 415.9397468053.

The spelling of 71960019 in words is "seventy-one million, nine hundred sixty thousand, nineteen".