64682428646 has 64 divisors (see below), whose sum is σ = 112488782400. Its totient is φ = 27849902080.

The previous prime is 64682428637. The next prime is 64682428763.

64682428646 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 64682428591 and 64682428600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4083590 + ... + 4099398.

It is an arithmetic number, because the mean of its divisors is an integer number (1757637225).

Almost surely, 2^64682428646 is an apocalyptic number.

64682428646 is a deficient number, since it is larger than the sum of its proper divisors (47806353754).

64682428646 is a wasteful number, since it uses less digits than its factorization.

64682428646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15926 (or 15904 counting only the distinct ones).

The product of its digits is 21233664, while the sum is 56.

The spelling of 64682428646 in words is "sixty-four billion, six hundred eighty-two million, four hundred twenty-eight thousand, six hundred forty-six".