6363666985 has 16 divisors (see below), whose sum is σ = 8226545040. Its totient is φ = 4697763840.

The previous prime is 6363666977. The next prime is 6363667019. The reversal of 6363666985 is 5896663636.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 432972864 + 5930694121 = 20808^2 + 77011^2 .

It is not a de Polignac number, because 6363666985 - 2³ = 6363666977 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203901 + ... + 233029.

It is an arithmetic number, because the mean of its divisors is an integer number (514159065).

Almost surely, 2^6363666985 is an apocalyptic number.

6363666985 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6363666985 is a deficient number, since it is larger than the sum of its proper divisors (1862878055).

6363666985 is a wasteful number, since it uses less digits than its factorization.

6363666985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32508.

The product of its digits is 25194240, while the sum is 58.

The square root of 6363666985 is about 79772.5954510695. The cubic root of 6363666985 is about 1853.1154697462.

The spelling of 6363666985 in words is "six billion, three hundred sixty-three million, six hundred sixty-six thousand, nine hundred eighty-five".