71044864 has 36 divisors (see below), whose sum is σ = 154710360. Its totient is φ = 32291840.

The previous prime is 71044859. The next prime is 71044879. The reversal of 71044864 is 46844017.

It is a super-3 number, since 3×71044864³ (a number of 25 digits) contains 333 as substring.

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, 9799 + ... + 15430.

It is an arithmetic number, because the mean of its divisors is an integer number (4297510).

Almost surely, 2^71044864 is an apocalyptic number.

It is an amenable number.

71044864 is an abundant number, since it is smaller than the sum of its proper divisors (83665496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71044864 is a wasteful number, since it uses less digits than its factorization.

71044864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25256 (or 25242 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 71044864 is about 8428.8115413740. The cubic root of 71044864 is about 414.1689742530.

The spelling of 71044864 in words is "seventy-one million, forty-four thousand, eight hundred sixty-four".