6601963859 has 2 divisors, whose sum is σ = 6601963860. Its totient is φ = 6601963858.

The previous prime is 6601963847. The next prime is 6601963871. The reversal of 6601963859 is 9583691066.

It is a balanced prime because it is at equal distance from previous prime (6601963847) and next prime (6601963871).

It is a cyclic number.

It is not a de Polignac number, because 6601963859 - 2⁴ = 6601963843 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6601963859.

It is not a weakly prime, because it can be changed into another prime (6601962859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3300981929 + 3300981930.

It is an arithmetic number, because the mean of its divisors is an integer number (3300981930).

Almost surely, 2^6601963859 is an apocalyptic number.

6601963859 is a deficient number, since it is larger than the sum of its proper divisors (1).

6601963859 is an equidigital number, since it uses as much as digits as its factorization.

6601963859 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2099520, while the sum is 53.

The square root of 6601963859 is about 81252.4698639986. The cubic root of 6601963859 is about 1875.9634855247.

The spelling of 6601963859 in words is "six billion, six hundred one million, nine hundred sixty-three thousand, eight hundred fifty-nine".