6662965849 has 2 divisors, whose sum is σ = 6662965850. Its totient is φ = 6662965848.

The previous prime is 6662965831. The next prime is 6662965853. The reversal of 6662965849 is 9485692666.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6353205849 + 309760000 = 79707^2 + 17600^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6662965849 is a prime.

It is a super-2 number, since 2×6662965849² = 88790227809880581602, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6662965879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3331482924 + 3331482925.

It is an arithmetic number, because the mean of its divisors is an integer number (3331482925).

Almost surely, 2^6662965849 is an apocalyptic number.

It is an amenable number.

6662965849 is a deficient number, since it is larger than the sum of its proper divisors (1).

6662965849 is an equidigital number, since it uses as much as digits as its factorization.

6662965849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 33592320, while the sum is 61.

The square root of 6662965849 is about 81626.9921594567. The cubic root of 6662965849 is about 1881.7237330237.

The spelling of 6662965849 in words is "six billion, six hundred sixty-two million, nine hundred sixty-five thousand, eight hundred forty-nine".