82615823 has 2 divisors, whose sum is σ = 82615824. Its totient is φ = 82615822.

The previous prime is 82615811. The next prime is 82615843. The reversal of 82615823 is 32851628.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82615823 - 2⁴ = 82615807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82615843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41307911 + 41307912.

It is an arithmetic number, because the mean of its divisors is an integer number (41307912).

Almost surely, 2^82615823 is an apocalyptic number.

82615823 is a deficient number, since it is larger than the sum of its proper divisors (1).

82615823 is an equidigital number, since it uses as much as digits as its factorization.

82615823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23040, while the sum is 35.

The square root of 82615823 is about 9089.3246723835. The cubic root of 82615823 is about 435.5330111365.

It can be divided in two parts, 82615 and 823, that added together give a palindrome (83438).

The spelling of 82615823 in words is "eighty-two million, six hundred fifteen thousand, eight hundred twenty-three".