82163799 has 12 divisors (see below), whose sum is σ = 119043912. Its totient is φ = 54608400.

The previous prime is 82163779. The next prime is 82163819. The reversal of 82163799 is 99736128.

82163799 is a `hidden beast` number, since 8 + 2 + 1 + 637 + 9 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (82163779) and next prime (82163819).

It is not a de Polignac number, because 82163799 - 2¹³ = 82155607 is a prime.

It is a super-2 number, since 2×82163799² = 13501779732224802, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82163729) 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, 10812 + ... + 16769.

It is an arithmetic number, because the mean of its divisors is an integer number (9920326).

Almost surely, 2^82163799 is an apocalyptic number.

82163799 is a deficient number, since it is larger than the sum of its proper divisors (36880113).

82163799 is a wasteful number, since it uses less digits than its factorization.

82163799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27918 (or 27915 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 82163799 is about 9064.4249128116. The cubic root of 82163799 is about 434.7372332984.

It can be divided in two parts, 821 and 63799, that added together give a triangular number (64620 = T₃₅₉).

The spelling of 82163799 in words is "eighty-two million, one hundred sixty-three thousand, seven hundred ninety-nine".