71217116 has 12 divisors (see below), whose sum is σ = 127528632. Its totient is φ = 34780368.

The previous prime is 71217101. The next prime is 71217143. The reversal of 71217116 is 61171217.

It is a super-2 number, since 2×71217116² = 10143755222714912, which contains 22 as substring.

It is a hoax number, since the sum of its digits (26) 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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206855 + ... + 207198.

It is an arithmetic number, because the mean of its divisors is an integer number (10627386).

Almost surely, 2^71217116 is an apocalyptic number.

It is an amenable number.

71217116 is a deficient number, since it is larger than the sum of its proper divisors (56311516).

71217116 is a wasteful number, since it uses less digits than its factorization.

71217116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414100 (or 414098 counting only the distinct ones).

The product of its digits is 588, while the sum is 26.

The square root of 71217116 is about 8439.0234032144. The cubic root of 71217116 is about 414.5034288998.

The spelling of 71217116 in words is "seventy-one million, two hundred seventeen thousand, one hundred sixteen".