64704406326 has 64 divisors (see below), whose sum is σ = 148593139200. Its totient is φ = 18399928320.

The previous prime is 64704406321. The next prime is 64704406339. The reversal of 64704406326 is 62360440746.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64704406321) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 23972125 + ... + 23974823.

It is an arithmetic number, because the mean of its divisors is an integer number (2321767800).

Almost surely, 2^64704406326 is an apocalyptic number.

64704406326 is an abundant number, since it is smaller than the sum of its proper divisors (83888732874).

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

64704406326 is a wasteful number, since it uses less digits than its factorization.

64704406326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5189.

The product of its (nonzero) digits is 580608, while the sum is 42.

The spelling of 64704406326 in words is "sixty-four billion, seven hundred four million, four hundred six thousand, three hundred twenty-six".