82205799 has 16 divisors (see below), whose sum is σ = 124252800. Its totient is φ = 47925216.

The previous prime is 82205791. The next prime is 82205801. The reversal of 82205799 is 99750228.

82205799 = T₃₁₂ + T₃₁₃ + ... + T₈₀₅.

It is not a de Polignac number, because 82205799 - 2³ = 82205791 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 82205799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82205791) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54729 + ... + 56210.

It is an arithmetic number, because the mean of its divisors is an integer number (7765800).

Almost surely, 2^82205799 is an apocalyptic number.

82205799 is a deficient number, since it is larger than the sum of its proper divisors (42047001).

82205799 is a wasteful number, since it uses less digits than its factorization.

82205799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110974.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 82205799 is about 9066.7413661138. The cubic root of 82205799 is about 434.8112961409.

The spelling of 82205799 in words is "eighty-two million, two hundred five thousand, seven hundred ninety-nine".