9966677803 has 2 divisors, whose sum is σ = 9966677804. Its totient is φ = 9966677802.

The previous prime is 9966677797. The next prime is 9966677807. The reversal of 9966677803 is 3087766699.

It is a strong prime.

It is an emirp because it is prime and its reverse (3087766699) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9966677803 - 2¹⁷ = 9966546731 is a prime.

It is not a weakly prime, because it can be changed into another prime (9966677807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4983338901 + 4983338902.

It is an arithmetic number, because the mean of its divisors is an integer number (4983338902).

Almost surely, 2^9966677803 is an apocalyptic number.

9966677803 is a deficient number, since it is larger than the sum of its proper divisors (1).

9966677803 is an equidigital number, since it uses as much as digits as its factorization.

9966677803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20575296, while the sum is 61.

The square root of 9966677803 is about 99833.2499871661. The cubic root of 9966677803 is about 2152.0390105092.

The spelling of 9966677803 in words is "nine billion, nine hundred sixty-six million, six hundred seventy-seven thousand, eight hundred three".