6366899641 has 4 divisors (see below), whose sum is σ = 6367628800. Its totient is φ = 6366170484.

The previous prime is 6366899633. The next prime is 6366899647. The reversal of 6366899641 is 1469986636.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6366899641 - 2³ = 6366899633 is a prime.

It is a super-2 number, since 2×6366899641² = 81074822077131857762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6366899647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 351321 + ... + 368998.

It is an arithmetic number, because the mean of its divisors is an integer number (1591907200).

Almost surely, 2^6366899641 is an apocalyptic number.

It is an amenable number.

6366899641 is a deficient number, since it is larger than the sum of its proper divisors (729159).

6366899641 is an equidigital number, since it uses as much as digits as its factorization.

6366899641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729158.

The product of its digits is 10077696, while the sum is 58.

The square root of 6366899641 is about 79792.8545735770. The cubic root of 6366899641 is about 1853.4292024195.

The spelling of 6366899641 in words is "six billion, three hundred sixty-six million, eight hundred ninety-nine thousand, six hundred forty-one".