6406266064 has 80 divisors (see below), whose sum is σ = 14015531520. Its totient is φ = 2810304000.

The previous prime is 6406266059. The next prime is 6406266067. The reversal of 6406266064 is 4606626046.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6406266067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2295582 + ... + 2298370.

It is an arithmetic number, because the mean of its divisors is an integer number (175194144).

Almost surely, 2^6406266064 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 6406266064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7007765760).

6406266064 is an abundant number, since it is smaller than the sum of its proper divisors (7609265456).

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

6406266064 is a wasteful number, since it uses less digits than its factorization.

6406266064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3260 (or 3254 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 40.

The square root of 6406266064 is about 80039.1533188601. The cubic root of 6406266064 is about 1857.2412627349.

The spelling of 6406266064 in words is "six billion, four hundred six million, two hundred sixty-six thousand, sixty-four".