71064013 has 8 divisors (see below), whose sum is σ = 73118232. Its totient is φ = 69016896.

The previous prime is 71063989. The next prime is 71064061. The reversal of 71064013 is 31046017.

It can be written as a sum of positive squares in 4 ways, for example, as 27741289 + 43322724 = 5267^2 + 6582^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71064013 - 2¹³ = 71055821 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 (71064083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23631 + ... + 26467.

It is an arithmetic number, because the mean of its divisors is an integer number (9139779).

Almost surely, 2^71064013 is an apocalyptic number.

It is an amenable number.

71064013 is a deficient number, since it is larger than the sum of its proper divisors (2054219).

71064013 is a wasteful number, since it uses less digits than its factorization.

71064013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3551.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 71064013 is about 8429.9473901087. The cubic root of 71064013 is about 414.2061817714.

The spelling of 71064013 in words is "seventy-one million, sixty-four thousand, thirteen".