84644648 has 16 divisors (see below), whose sum is σ = 173136960. Its totient is φ = 38474800.

The previous prime is 84644647. The next prime is 84644653.

84644648 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 84644599 and 84644608.

It is not an unprimeable number, because it can be changed into a prime (84644647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 480848 + ... + 481023.

It is an arithmetic number, because the mean of its divisors is an integer number (10821060).

Almost surely, 2^84644648 is an apocalyptic number.

84644648 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

84644648 is an abundant number, since it is smaller than the sum of its proper divisors (88492312).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84644648 is a wasteful number, since it uses less digits than its factorization.

84644648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961888 (or 961884 counting only the distinct ones).

The product of its digits is 589824, while the sum is 44.

The square root of 84644648 is about 9200.2526052277. The cubic root of 84644648 is about 439.0693967914.

The spelling of 84644648 in words is "eighty-four million, six hundred forty-four thousand, six hundred forty-eight".