6403626908 has 72 divisors (see below), whose sum is σ = 13204356480. Its totient is φ = 2661755040.

The previous prime is 6403626899. The next prime is 6403626913. The reversal of 6403626908 is 8096263046.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9266843 + ... + 9267533.

It is an arithmetic number, because the mean of its divisors is an integer number (183393840).

Almost surely, 2^6403626908 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6403626908, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6602178240).

6403626908 is an abundant number, since it is smaller than the sum of its proper divisors (6800729572).

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

6403626908 is a wasteful number, since it uses less digits than its factorization.

6403626908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 967 (or 922 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 44.

The square root of 6403626908 is about 80022.6649643712. The cubic root of 6403626908 is about 1856.9861883741.

The spelling of 6403626908 in words is "six billion, four hundred three million, six hundred twenty-six thousand, nine hundred eight".