71604441 has 12 divisors (see below), whose sum is σ = 104973232. Its totient is φ = 47023416.

The previous prime is 71604439. The next prime is 71604443. The reversal of 71604441 is 14440617.

It is an interprime number because it is at equal distance from previous prime (71604439) and next prime (71604443).

It is not a de Polignac number, because 71604441 - 2¹ = 71604439 is a prime.

It is a Duffinian 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 11 ways as a sum of consecutive naturals, for example, 58771 + ... + 59976.

Almost surely, 2^71604441 is an apocalyptic number.

It is an amenable number.

71604441 is a deficient number, since it is larger than the sum of its proper divisors (33368791).

71604441 is a wasteful number, since it uses less digits than its factorization.

71604441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118820 (or 118817 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 71604441 is about 8461.9407348433. The cubic root of 71604441 is about 415.2535171363.

The spelling of 71604441 in words is "seventy-one million, six hundred four thousand, four hundred forty-one".