82213207 has 8 divisors (see below), whose sum is σ = 87606576. Its totient is φ = 76881792.

The previous prime is 82213193. The next prime is 82213213. The reversal of 82213207 is 70231228.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 82213207 - 2¹¹ = 82211159 is a prime.

It is a super-2 number, since 2×82213207² = 13518022810449698, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82213217) 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, 12733 + ... + 18070.

It is an arithmetic number, because the mean of its divisors is an integer number (10950822).

Almost surely, 2^82213207 is an apocalyptic number.

82213207 is a deficient number, since it is larger than the sum of its proper divisors (5393369).

82213207 is a wasteful number, since it uses less digits than its factorization.

82213207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30977.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 82213207 is about 9067.1498829566. The cubic root of 82213207 is about 434.8243567983.

The spelling of 82213207 in words is "eighty-two million, two hundred thirteen thousand, two hundred seven".