71066413 has 4 divisors (see below), whose sum is σ = 77527008. Its totient is φ = 64605820.

The previous prime is 71066357. The next prime is 71066419. The reversal of 71066413 is 31466017.

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 a de Polignac number, because none of the positive numbers 2^k-71066413 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 (71066419) 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, 3230281 + ... + 3230302.

It is an arithmetic number, because the mean of its divisors is an integer number (19381752).

Almost surely, 2^71066413 is an apocalyptic number.

It is an amenable number.

71066413 is a deficient number, since it is larger than the sum of its proper divisors (6460595).

71066413 is a wasteful number, since it uses less digits than its factorization.

71066413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6460594.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 71066413 is about 8430.0897385496. The cubic root of 71066413 is about 414.2108446268.

The spelling of 71066413 in words is "seventy-one million, sixty-six thousand, four hundred thirteen".