82466821 has 8 divisors (see below), whose sum is σ = 89154080. Its totient is φ = 76014288.

The previous prime is 82466773. The next prime is 82466827. The reversal of 82466821 is 12866428.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 82466821 - 2⁹ = 82466309 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82466827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57951 + ... + 59356.

It is an arithmetic number, because the mean of its divisors is an integer number (11144260).

Almost surely, 2^82466821 is an apocalyptic number.

It is an amenable number.

82466821 is a deficient number, since it is larger than the sum of its proper divisors (6687259).

82466821 is a wasteful number, since it uses less digits than its factorization.

82466821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117363.

The product of its digits is 36864, while the sum is 37.

The square root of 82466821 is about 9081.1244347823. The cubic root of 82466821 is about 435.2710179713.

The spelling of 82466821 in words is "eighty-two million, four hundred sixty-six thousand, eight hundred twenty-one".