6435257064 has 64 divisors (see below), whose sum is σ = 16662672000. Its totient is φ = 2068657920.

The previous prime is 6435257053. The next prime is 6435257107. The reversal of 6435257064 is 4607525346.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 634594 + ... + 644654.

It is an arithmetic number, because the mean of its divisors is an integer number (260354250).

Almost surely, 2^6435257064 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 6435257064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8331336000).

6435257064 is an abundant number, since it is smaller than the sum of its proper divisors (10227414936).

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

6435257064 is a wasteful number, since it uses less digits than its factorization.

6435257064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11018 (or 11014 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 42.

The square root of 6435257064 is about 80220.0540014777. The cubic root of 6435257064 is about 1860.0386418148.

The spelling of 6435257064 in words is "six billion, four hundred thirty-five million, two hundred fifty-seven thousand, sixty-four".