71671616 has 28 divisors (see below), whose sum is σ = 145255488. Its totient is φ = 35071872.

The previous prime is 71671571. The next prime is 71671637. The reversal of 71671616 is 61617617.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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, 8906 + ... + 14921.

It is an arithmetic number, because the mean of its divisors is an integer number (5187696).

Almost surely, 2^71671616 is an apocalyptic number.

It is an amenable number.

71671616 is an abundant number, since it is smaller than the sum of its proper divisors (73583872).

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

71671616 is a wasteful number, since it uses less digits than its factorization.

71671616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23886 (or 23876 counting only the distinct ones).

The product of its digits is 10584, while the sum is 35.

The square root of 71671616 is about 8465.9090474680. The cubic root of 71671616 is about 415.3833318802.

The spelling of 71671616 in words is "seventy-one million, six hundred seventy-one thousand, six hundred sixteen".