82643875 has 16 divisors (see below), whose sum is σ = 104457600. Its totient is φ = 65270400.

The previous prime is 82643867. The next prime is 82643879. The reversal of 82643875 is 57834628.

It is not a de Polignac number, because 82643875 - 2³ = 82643867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82643879) 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, 5691 + ... + 14059.

It is an arithmetic number, because the mean of its divisors is an integer number (6528600).

Almost surely, 2^82643875 is an apocalyptic number.

82643875 is a deficient number, since it is larger than the sum of its proper divisors (21813725).

82643875 is an equidigital number, since it uses as much as digits as its factorization.

82643875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8463 (or 8453 counting only the distinct ones).

The product of its digits is 322560, while the sum is 43.

The square root of 82643875 is about 9090.8676703602. The cubic root of 82643875 is about 435.5823002801.

The spelling of 82643875 in words is "eighty-two million, six hundred forty-three thousand, eight hundred seventy-five".