84664665 has 24 divisors (see below), whose sum is σ = 154477440. Its totient is φ = 42777504.

The previous prime is 84664663. The next prime is 84664667. The reversal of 84664665 is 56646648.

It is an interprime number because it is at equal distance from previous prime (84664663) and next prime (84664667).

It is not a de Polignac number, because 84664665 - 2¹ = 84664663 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 84664665.

It is not an unprimeable number, because it can be changed into a prime (84664663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48657 + ... + 50366.

It is an arithmetic number, because the mean of its divisors is an integer number (6436560).

Almost surely, 2^84664665 is an apocalyptic number.

It is an amenable number.

84664665 is a deficient number, since it is larger than the sum of its proper divisors (69812775).

84664665 is a wasteful number, since it uses less digits than its factorization.

84664665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99053 (or 99050 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

The square root of 84664665 is about 9201.3403914864. The cubic root of 84664665 is about 439.1040048444.

It can be divided in two parts, 8466 and 4665, that added together give a palindrome (13131).

The spelling of 84664665 in words is "eighty-four million, six hundred sixty-four thousand, six hundred sixty-five".