667656200616 has 64 divisors (see below), whose sum is σ = 1712889702720. Its totient is φ = 216738132480.

The previous prime is 667656200543. The next prime is 667656200621. The reversal of 667656200616 is 616002656766.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 48595 + ... + 1156578.

It is an arithmetic number, because the mean of its divisors is an integer number (26763901605).

Almost surely, 2^667656200616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 667656200616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (856444851360).

667656200616 is an abundant number, since it is smaller than the sum of its proper divisors (1045233502104).

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

667656200616 is a wasteful number, since it uses less digits than its factorization.

667656200616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1205786 (or 1205782 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 51.

The spelling of 667656200616 in words is "six hundred sixty-seven billion, six hundred fifty-six million, two hundred thousand, six hundred sixteen".