71886712 has 32 divisors (see below), whose sum is σ = 140025600. Its totient is φ = 34572384.

The previous prime is 71886701. The next prime is 71886713. The reversal of 71886712 is 21768817.

It is a Smith number, since the sum of its digits (40) 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 (71886713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21489 + ... + 24607.

It is an arithmetic number, because the mean of its divisors is an integer number (4375800).

Almost surely, 2^71886712 is an apocalyptic number.

It is an amenable number.

71886712 is a deficient number, since it is larger than the sum of its proper divisors (68138888).

71886712 is a wasteful number, since it uses less digits than its factorization.

71886712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3235 (or 3231 counting only the distinct ones).

The product of its digits is 37632, while the sum is 40.

The square root of 71886712 is about 8478.6031868463. The cubic root of 71886712 is about 415.7984569830.

The spelling of 71886712 in words is "seventy-one million, eight hundred eighty-six thousand, seven hundred twelve".