82507823 has 4 divisors (see below), whose sum is σ = 86850360. Its totient is φ = 78165288.

The previous prime is 82507811. The next prime is 82507849. The reversal of 82507823 is 32870528.

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 82507823 - 2¹⁶ = 82442287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82507423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2171240 + ... + 2171277.

It is an arithmetic number, because the mean of its divisors is an integer number (21712590).

Almost surely, 2^82507823 is an apocalyptic number.

82507823 is a deficient number, since it is larger than the sum of its proper divisors (4342537).

82507823 is a wasteful number, since it uses less digits than its factorization.

82507823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4342536.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 82507823 is about 9083.3816940609. The cubic root of 82507823 is about 435.3431440501.

The spelling of 82507823 in words is "eighty-two million, five hundred seven thousand, eight hundred twenty-three".