6664430 has 16 divisors (see below), whose sum is σ = 12032064. Its totient is φ = 2657760.

The previous prime is 6664429. The next prime is 6664447. The reversal of 6664430 is 344666.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 6664393 and 6664402.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3419 + ... + 5001.

It is an arithmetic number, because the mean of its divisors is an integer number (752004).

Almost surely, 2^6664430 is an apocalyptic number.

6664430 is a deficient number, since it is larger than the sum of its proper divisors (5367634).

6664430 is a wasteful number, since it uses less digits than its factorization.

6664430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2011.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 6664430 is about 2581.5557324993. Note that the first 3 decimals coincide. The cubic root of 6664430 is about 188.1861555827.

The spelling of 6664430 in words is "six million, six hundred sixty-four thousand, four hundred thirty".