4891664 has 20 divisors (see below), whose sum is σ = 9977040. Its totient is φ = 2316960.

The previous prime is 4891661. The next prime is 4891681. The reversal of 4891664 is 4661984.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (4891661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7742 + ... + 8349.

It is an arithmetic number, because the mean of its divisors is an integer number (498852).

Almost surely, 2^4891664 is an apocalyptic number.

It is an amenable number.

4891664 is an abundant number, since it is smaller than the sum of its proper divisors (5085376).

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

4891664 is a wasteful number, since it uses less digits than its factorization.

4891664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16118 (or 16112 counting only the distinct ones).

The product of its digits is 41472, while the sum is 38.

The square root of 4891664 is about 2211.7106501530. The cubic root of 4891664 is about 169.7535529357.

It can be divided in two parts, 4891 and 664, that added together give a palindrome (5555).

The spelling of 4891664 in words is "four million, eight hundred ninety-one thousand, six hundred sixty-four".