6666463 has 4 divisors (see below), whose sum is σ = 6674080. Its totient is φ = 6658848.

The previous prime is 6666449. The next prime is 6666467. The reversal of 6666463 is 3646666.

It is a semiprime because it is the product of two primes, 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 6666463 - 2⁹ = 6665951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6666467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2295 + ... + 4312.

It is an arithmetic number, because the mean of its divisors is an integer number (1668520).

Almost surely, 2^6666463 is an apocalyptic number.

6666463 is a deficient number, since it is larger than the sum of its proper divisors (7617).

6666463 is a wasteful number, since it uses less digits than its factorization.

6666463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7616.

The product of its digits is 93312, while the sum is 37.

The square root of 6666463 is about 2581.9494572900. The cubic root of 6666463 is about 188.2052891800.

The spelling of 6666463 in words is "six million, six hundred sixty-six thousand, four hundred sixty-three".