84565870669 has 16 divisors (see below), whose sum is σ = 97423224192. Its totient is φ = 71904780288.

The previous prime is 84565870657. The next prime is 84565870717. The reversal of 84565870669 is 96607856548.

It is a cyclic number.

It is not a de Polignac number, because 84565870669 - 2²⁷ = 84431652941 is a prime.

It is a super-2 number, since 2×84565870669² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 84565870669.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84565870639) 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, 388242 + ... + 565564.

It is an arithmetic number, because the mean of its divisors is an integer number (6088951512).

Almost surely, 2^84565870669 is an apocalyptic number.

It is an amenable number.

84565870669 is a deficient number, since it is larger than the sum of its proper divisors (12857353523).

84565870669 is a wasteful number, since it uses less digits than its factorization.

84565870669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177876.

The product of its (nonzero) digits is 87091200, while the sum is 64.

The spelling of 84565870669 in words is "eighty-four billion, five hundred sixty-five million, eight hundred seventy thousand, six hundred sixty-nine".