82169665 has 8 divisors (see below), whose sum is σ = 98717760. Its totient is φ = 65659632.

The previous prime is 82169641. The next prime is 82169683. The reversal of 82169665 is 56696128.

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

It is a cyclic number.

It is not a de Polignac number, because 82169665 - 2¹³ = 82161473 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4525 + ... + 13594.

It is an arithmetic number, because the mean of its divisors is an integer number (12339720).

Almost surely, 2^82169665 is an apocalyptic number.

It is an amenable number.

82169665 is a deficient number, since it is larger than the sum of its proper divisors (16548095).

82169665 is a wasteful number, since it uses less digits than its factorization.

82169665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19031.

The product of its digits is 155520, while the sum is 43.

The square root of 82169665 is about 9064.7484796877. The cubic root of 82169665 is about 434.7475789249.

The spelling of 82169665 in words is "eighty-two million, one hundred sixty-nine thousand, six hundred sixty-five".