64682028646 has 4 divisors (see below), whose sum is σ = 97023042972. Its totient is φ = 32341014322.

The previous prime is 64682028623. The next prime is 64682028659.

64682028646 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 64682028593 and 64682028602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16170507160 + ... + 16170507163.

It is an arithmetic number, because the mean of its divisors is an integer number (24255760743).

Almost surely, 2^64682028646 is an apocalyptic number.

64682028646 is a deficient number, since it is larger than the sum of its proper divisors (32341014326).

64682028646 is a wasteful number, since it uses less digits than its factorization.

64682028646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32341014325.

The product of its (nonzero) digits is 5308416, while the sum is 52.

The spelling of 64682028646 in words is "sixty-four billion, six hundred eighty-two million, twenty-eight thousand, six hundred forty-six".