6404866263 has 60 divisors (see below), whose sum is σ = 10203537960. Its totient is φ = 4003008768.

The previous prime is 6404866261. The next prime is 6404866267. The reversal of 6404866263 is 3626684046.

6404866263 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6404866263 - 2¹ = 6404866261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6404866261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 9808045 + ... + 9808697.

It is an arithmetic number, because the mean of its divisors is an integer number (170058966).

Almost surely, 2^6404866263 is an apocalyptic number.

6404866263 is a deficient number, since it is larger than the sum of its proper divisors (3798671697).

6404866263 is a wasteful number, since it uses less digits than its factorization.

6404866263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1118 (or 1092 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 45.

The square root of 6404866263 is about 80030.4083645710. The cubic root of 6404866263 is about 1857.1059807299.

The spelling of 6404866263 in words is "six billion, four hundred four million, eight hundred sixty-six thousand, two hundred sixty-three".