4668649 has 4 divisors (see below), whose sum is σ = 4673536. Its totient is φ = 4663764.

The previous prime is 4668641. The next prime is 4668679. The reversal of 4668649 is 9468664.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 4668649 - 2³ = 4668641 is a prime.

It is an Ulam number.

It is a Duffinian number.

4668649 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4668641) 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 3 ways as a sum of consecutive naturals, for example, 489 + ... + 3094.

It is an arithmetic number, because the mean of its divisors is an integer number (1168384).

Almost surely, 2^4668649 is an apocalyptic number.

It is an amenable number.

4668649 is a deficient number, since it is larger than the sum of its proper divisors (4887).

4668649 is a wasteful number, since it uses less digits than its factorization.

4668649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4886.

The product of its digits is 248832, while the sum is 43.

The square root of 4668649 is about 2160.7056717656. The cubic root of 4668649 is about 167.1335897863.

The spelling of 4668649 in words is "four million, six hundred sixty-eight thousand, six hundred forty-nine".