71216706 has 32 divisors (see below), whose sum is σ = 164524608. Its totient is φ = 20311040.

The previous prime is 71216687. The next prime is 71216711. The reversal of 71216706 is 60761217.

It is a happy number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 30615 + ... + 32858.

It is an arithmetic number, because the mean of its divisors is an integer number (5141394).

Almost surely, 2^71216706 is an apocalyptic number.

71216706 is an abundant number, since it is smaller than the sum of its proper divisors (93307902).

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

71216706 is a wasteful number, since it uses less digits than its factorization.

71216706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63506.

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 71216706 is about 8438.9991112691. Note that the first 3 decimals coincide. The cubic root of 71216706 is about 414.5026334602.

The spelling of 71216706 in words is "seventy-one million, two hundred sixteen thousand, seven hundred six".