64600670208 has 192 divisors, whose sum is σ = 183609840960. Its totient is φ = 20132659200.

The previous prime is 64600670207. The next prime is 64600670213. The reversal of 64600670208 is 80207600646.

It is a tau number, because it is divible by the number of its divisors (192).

It is a zygodrome in base 4.

It is not an unprimeable number, because it can be changed into a prime (64600670207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 427818933 + ... + 427819083.

It is an arithmetic number, because the mean of its divisors is an integer number (956301255).

Almost surely, 2^64600670208 is an apocalyptic number.

64600670208 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64600670208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91804920480).

64600670208 is an abundant number, since it is smaller than the sum of its proper divisors (119009170752).

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

64600670208 is an frugal number, since it uses more digits than its factorization.

64600670208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217 (or 173 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The spelling of 64600670208 in words is "sixty-four billion, six hundred million, six hundred seventy thousand, two hundred eight".