71604444 has 12 divisors (see below), whose sum is σ = 167077064. Its totient is φ = 23868144.

The previous prime is 71604443. The next prime is 71604457. The reversal of 71604444 is 44440617.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71604443) 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, 2983507 + ... + 2983530.

Almost surely, 2^71604444 is an apocalyptic number.

It is an amenable number.

71604444 is an abundant number, since it is smaller than the sum of its proper divisors (95472620).

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

71604444 is a wasteful number, since it uses less digits than its factorization.

71604444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5967044 (or 5967042 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 71604444 is about 8461.9409121076. The cubic root of 71604444 is about 415.2535229356.

The spelling of 71604444 in words is "seventy-one million, six hundred four thousand, four hundred forty-four".