6403898587 has 2 divisors, whose sum is σ = 6403898588. Its totient is φ = 6403898586.

The previous prime is 6403898551. The next prime is 6403898629. The reversal of 6403898587 is 7858983046.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6403898587 is a prime.

It is a super-2 number, since 2×6403898587² = 82019834225161193138, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6403892587) 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 as a sum of consecutive naturals, namely, 3201949293 + 3201949294.

It is an arithmetic number, because the mean of its divisors is an integer number (3201949294).

Almost surely, 2^6403898587 is an apocalyptic number.

6403898587 is a deficient number, since it is larger than the sum of its proper divisors (1).

6403898587 is an equidigital number, since it uses as much as digits as its factorization.

6403898587 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11612160, while the sum is 58.

The square root of 6403898587 is about 80024.3624591911. The cubic root of 6403898587 is about 1857.0124493781.

The spelling of 6403898587 in words is "six billion, four hundred three million, eight hundred ninety-eight thousand, five hundred eighty-seven".