71216207 has 4 divisors (see below), whose sum is σ = 73513536. Its totient is φ = 68918880.

The previous prime is 71216183. The next prime is 71216239. The reversal of 71216207 is 70261217.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70261217 = 13 ⋅5404709.

It is a cyclic number.

It is not a de Polignac number, because 71216207 - 2²⁴ = 54438991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71216297) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1148618 + ... + 1148679.

It is an arithmetic number, because the mean of its divisors is an integer number (18378384).

Almost surely, 2^71216207 is an apocalyptic number.

71216207 is a deficient number, since it is larger than the sum of its proper divisors (2297329).

71216207 is a wasteful number, since it uses less digits than its factorization.

71216207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2297328.

The product of its (nonzero) digits is 1176, while the sum is 26.

The square root of 71216207 is about 8438.9695460998. The cubic root of 71216207 is about 414.5016653480.

The spelling of 71216207 in words is "seventy-one million, two hundred sixteen thousand, two hundred seven".