6664402 has 16 divisors (see below), whose sum is σ = 10654560. Its totient is φ = 3117312.

The previous prime is 6664387. The next prime is 6664417. The reversal of 6664402 is 2044666.

It is an interprime number because it is at equal distance from previous prime (6664387) and next prime (6664417).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2098 + ... + 4210.

It is an arithmetic number, because the mean of its divisors is an integer number (665910).

Almost surely, 2^6664402 is an apocalyptic number.

6664402 is a deficient number, since it is larger than the sum of its proper divisors (3990158).

6664402 is a wasteful number, since it uses less digits than its factorization.

6664402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2217.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 6664402 is about 2581.5503094071. The cubic root of 6664402 is about 188.1858920333.

The spelling of 6664402 in words is "six million, six hundred sixty-four thousand, four hundred two".