71684612 has 24 divisors (see below), whose sum is σ = 128805600. Its totient is φ = 34888896.

The previous prime is 71684611. The next prime is 71684621. The reversal of 71684612 is 21648617.

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

It is not an unprimeable number, because it can be changed into a prime (71684611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69839 + ... + 70857.

It is an arithmetic number, because the mean of its divisors is an integer number (5366900).

Almost surely, 2^71684612 is an apocalyptic number.

It is an amenable number.

71684612 is a deficient number, since it is larger than the sum of its proper divisors (57120988).

71684612 is a wasteful number, since it uses less digits than its factorization.

71684612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1475 (or 1473 counting only the distinct ones).

The product of its digits is 16128, while the sum is 35.

The square root of 71684612 is about 8466.6765616740. The cubic root of 71684612 is about 415.4084371024.

The spelling of 71684612 in words is "seventy-one million, six hundred eighty-four thousand, six hundred twelve".