6464903689 has 4 divisors (see below), whose sum is σ = 6469218000. Its totient is φ = 6460589380.

The previous prime is 6464903639. The next prime is 6464903693. The reversal of 6464903689 is 9863094646.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6464903689 - 2¹³ = 6464895497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6464903629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2154907 + ... + 2157904.

It is an arithmetic number, because the mean of its divisors is an integer number (1617304500).

Almost surely, 2^6464903689 is an apocalyptic number.

It is an amenable number.

6464903689 is a deficient number, since it is larger than the sum of its proper divisors (4314311).

6464903689 is a wasteful number, since it uses less digits than its factorization.

6464903689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4314310.

The product of its (nonzero) digits is 6718464, while the sum is 55.

The square root of 6464903689 is about 80404.6247985774. The cubic root of 6464903689 is about 1862.8906078278.

The spelling of 6464903689 in words is "six billion, four hundred sixty-four million, nine hundred three thousand, six hundred eighty-nine".