6631666003 has 2 divisors, whose sum is σ = 6631666004. Its totient is φ = 6631666002.

The previous prime is 6631665967. The next prime is 6631666033. The reversal of 6631666003 is 3006661366.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6631666003 - 2²¹ = 6629568851 is a prime.

It is not a weakly prime, because it can be changed into another prime (6631666033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3315833001 + 3315833002.

It is an arithmetic number, because the mean of its divisors is an integer number (3315833002).

Almost surely, 2^6631666003 is an apocalyptic number.

6631666003 is a deficient number, since it is larger than the sum of its proper divisors (1).

6631666003 is an equidigital number, since it uses as much as digits as its factorization.

6631666003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 37.

The square root of 6631666003 is about 81435.0416160021. The cubic root of 6631666003 is about 1878.7725882720.

The spelling of 6631666003 in words is "six billion, six hundred thirty-one million, six hundred sixty-six thousand, three".