71862013 has 4 divisors (see below), whose sum is σ = 73391040. Its totient is φ = 70332988.

The previous prime is 71861963. The next prime is 71862017. The reversal of 71862013 is 31026817.

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 71862013 - 2⁹ = 71861501 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 (71862017) 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, 764443 + ... + 764536.

It is an arithmetic number, because the mean of its divisors is an integer number (18347760).

Almost surely, 2^71862013 is an apocalyptic number.

It is an amenable number.

71862013 is a deficient number, since it is larger than the sum of its proper divisors (1529027).

71862013 is a wasteful number, since it uses less digits than its factorization.

71862013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1529026.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 71862013 is about 8477.1465128308. The cubic root of 71862013 is about 415.7508312016.

The spelling of 71862013 in words is "seventy-one million, eight hundred sixty-two thousand, thirteen".