82774211 has 4 divisors (see below), whose sum is σ = 89141472. Its totient is φ = 76406952.

The previous prime is 82774201. The next prime is 82774229. The reversal of 82774211 is 11247728.

It is a happy number.

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 82774211 - 2⁶ = 82774147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82774201) 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, 3183611 + ... + 3183636.

It is an arithmetic number, because the mean of its divisors is an integer number (22285368).

Almost surely, 2^82774211 is an apocalyptic number.

82774211 is a deficient number, since it is larger than the sum of its proper divisors (6367261).

82774211 is a wasteful number, since it uses less digits than its factorization.

82774211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6367260.

The product of its digits is 6272, while the sum is 32.

The square root of 82774211 is about 9098.0333589188. The cubic root of 82774211 is about 435.8111627179.

The spelling of 82774211 in words is "eighty-two million, seven hundred seventy-four thousand, two hundred eleven".