6664801 has 24 divisors (see below), whose sum is σ = 8341760. Its totient is φ = 5274720.

The previous prime is 6664789. The next prime is 6664811. The reversal of 6664801 is 1084666.

6664801 = T₄₁₆ + T₄₁₇ + ... + T₄₈₁.

It is not a de Polignac number, because 6664801 - 2⁵ = 6664769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6664811) 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 23 ways as a sum of consecutive naturals, for example, 29776 + ... + 29998.

Almost surely, 2^6664801 is an apocalyptic number.

It is an amenable number.

6664801 is a deficient number, since it is larger than the sum of its proper divisors (1676959).

6664801 is a wasteful number, since it uses less digits than its factorization.

6664801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277 (or 266 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 6664801 is about 2581.6275873952. The cubic root of 6664801 is about 188.1896475427.

The spelling of 6664801 in words is "six million, six hundred sixty-four thousand, eight hundred one".