82216207 has 4 divisors (see below), whose sum is σ = 83965536. Its totient is φ = 80466880.

The previous prime is 82216163. The next prime is 82216213. The reversal of 82216207 is 70261228.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 82216207 - 2²³ = 73827599 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 (82216217) 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 3 ways as a sum of consecutive naturals, for example, 874594 + ... + 874687.

It is an arithmetic number, because the mean of its divisors is an integer number (20991384).

Almost surely, 2^82216207 is an apocalyptic number.

82216207 is a deficient number, since it is larger than the sum of its proper divisors (1749329).

82216207 is a wasteful number, since it uses less digits than its factorization.

82216207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1749328.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 82216207 is about 9067.3153138071. The cubic root of 82216207 is about 434.8296457182.

The spelling of 82216207 in words is "eighty-two million, two hundred sixteen thousand, two hundred seven".