82566667 has 4 divisors (see below), whose sum is σ = 82739520. Its totient is φ = 82393816.

The previous prime is 82566643. The next prime is 82566677. The reversal of 82566667 is 76666528.

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 82566667 - 2¹⁹ = 82042379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82566607) 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, 85708 + ... + 86665.

It is an arithmetic number, because the mean of its divisors is an integer number (20684880).

Almost surely, 2^82566667 is an apocalyptic number.

82566667 is a deficient number, since it is larger than the sum of its proper divisors (172853).

82566667 is a wasteful number, since it uses less digits than its factorization.

82566667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172852.

The product of its digits is 725760, while the sum is 46.

The square root of 82566667 is about 9086.6202187612. The cubic root of 82566667 is about 435.4466140138.

The spelling of 82566667 in words is "eighty-two million, five hundred sixty-six thousand, six hundred sixty-seven".