71895413 has 4 divisors (see below), whose sum is σ = 71920428. Its totient is φ = 71870400.

The previous prime is 71895407. The next prime is 71895457. The reversal of 71895413 is 31459817.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31459817 = 157 ⋅200381.

It can be written as a sum of positive squares in 2 ways, for example, as 64915249 + 6980164 = 8057^2 + 2642^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71895413 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71895013) 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, 7538 + ... + 14163.

It is an arithmetic number, because the mean of its divisors is an integer number (17980107).

Almost surely, 2^71895413 is an apocalyptic number.

It is an amenable number.

71895413 is a deficient number, since it is larger than the sum of its proper divisors (25015).

71895413 is a wasteful number, since it uses less digits than its factorization.

71895413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25014.

The product of its digits is 30240, while the sum is 38.

The square root of 71895413 is about 8479.1162865006. The cubic root of 71895413 is about 415.8152320648.

The spelling of 71895413 in words is "seventy-one million, eight hundred ninety-five thousand, four hundred thirteen".