6663651003 has 8 divisors (see below), whose sum is σ = 9872075600. Its totient is φ = 4442433984.

The previous prime is 6663650999. The next prime is 6663651013. The reversal of 6663651003 is 3001563666.

It is a happy number.

It is not a de Polignac number, because 6663651003 - 2² = 6663650999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6663651013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123400918 + ... + 123400971.

It is an arithmetic number, because the mean of its divisors is an integer number (1234009450).

Almost surely, 2^6663651003 is an apocalyptic number.

6663651003 is a deficient number, since it is larger than the sum of its proper divisors (3208424597).

6663651003 is a wasteful number, since it uses less digits than its factorization.

6663651003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246801898 (or 246801892 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 36.

The square root of 6663651003 is about 81631.1889108569. The cubic root of 6663651003 is about 1881.7882301452.

The spelling of 6663651003 in words is "six billion, six hundred sixty-three million, six hundred fifty-one thousand, three".