6436263660 has 96 divisors (see below), whose sum is σ = 18433336320. Its totient is φ = 1677232128.

The previous prime is 6436263653. The next prime is 6436263677. The reversal of 6436263660 is 663626346.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2421052 + ... + 2423708.

It is an arithmetic number, because the mean of its divisors is an integer number (192013920).

Almost surely, 2^6436263660 is an apocalyptic number.

6436263660 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6436263660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9216668160).

6436263660 is an abundant number, since it is smaller than the sum of its proper divisors (11997072660).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6436263660 is a wasteful number, since it uses less digits than its factorization.

6436263660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3575 (or 3573 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 42.

The square root of 6436263660 is about 80226.3277235098. The cubic root of 6436263660 is about 1860.1356185077.

The spelling of 6436263660 in words is "six billion, four hundred thirty-six million, two hundred sixty-three thousand, six hundred sixty".