71215064 has 16 divisors (see below), whose sum is σ = 133719120. Its totient is φ = 35556640.

The previous prime is 71215049. The next prime is 71215139. The reversal of 71215064 is 46051217.

It is a zygodrome in base 3.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47 + ... + 11934.

It is an arithmetic number, because the mean of its divisors is an integer number (8357445).

Almost surely, 2^71215064 is an apocalyptic number.

It is an amenable number.

71215064 is a deficient number, since it is larger than the sum of its proper divisors (62504056).

71215064 is a wasteful number, since it uses less digits than its factorization.

71215064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12730 (or 12726 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 71215064 is about 8438.9018242897. The cubic root of 71215064 is about 414.4994477912.

The spelling of 71215064 in words is "seventy-one million, two hundred fifteen thousand, sixty-four".