82169345 has 16 divisors (see below), whose sum is σ = 102814272. Its totient is φ = 62986560.

The previous prime is 82169309. The next prime is 82169369. The reversal of 82169345 is 54396128.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-82169345 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 82169299 and 82169308.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7790 + ... + 15000.

It is an arithmetic number, because the mean of its divisors is an integer number (6425892).

Almost surely, 2^82169345 is an apocalyptic number.

It is an amenable number.

82169345 is a deficient number, since it is larger than the sum of its proper divisors (20644927).

82169345 is a wasteful number, since it uses less digits than its factorization.

82169345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7312.

The product of its digits is 51840, while the sum is 38.

The square root of 82169345 is about 9064.7308288774. The cubic root of 82169345 is about 434.7470145665.

The spelling of 82169345 in words is "eighty-two million, one hundred sixty-nine thousand, three hundred forty-five".