82266993 has 12 divisors (see below), whose sum is σ = 119699268. Its totient is φ = 54443520.

The previous prime is 82266991. The next prime is 82267013. The reversal of 82266993 is 39966228.

It can be written as a sum of positive squares in 2 ways, for example, as 42614784 + 39652209 = 6528^2 + 6297^2 .

It is not a de Polignac number, because 82266993 - 2¹ = 82266991 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82266991) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32128 + ... + 34593.

It is an arithmetic number, because the mean of its divisors is an integer number (9974939).

Almost surely, 2^82266993 is an apocalyptic number.

It is an amenable number.

82266993 is a deficient number, since it is larger than the sum of its proper divisors (37432275).

82266993 is a wasteful number, since it uses less digits than its factorization.

82266993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66864 (or 66861 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 82266993 is about 9070.1153796410. The cubic root of 82266993 is about 434.9191605625.

The spelling of 82266993 in words is "eighty-two million, two hundred sixty-six thousand, nine hundred ninety-three".