71884664 has 16 divisors (see below), whose sum is σ = 135227400. Its totient is φ = 35824032.

The previous prime is 71884651. The next prime is 71884669. The reversal of 71884664 is 46648817.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71884669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12179 + ... + 17090.

Almost surely, 2^71884664 is an apocalyptic number.

It is an amenable number.

71884664 is a deficient number, since it is larger than the sum of its proper divisors (63342736).

71884664 is a wasteful number, since it uses less digits than its factorization.

71884664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29582 (or 29578 counting only the distinct ones).

The product of its digits is 258048, while the sum is 44.

The square root of 71884664 is about 8478.4824113753. The cubic root of 71884664 is about 415.7945083472.

The spelling of 71884664 in words is "seventy-one million, eight hundred eighty-four thousand, six hundred sixty-four".