662078815068 has 96 divisors (see below), whose sum is σ = 1695762851328. Its totient is φ = 199387238400.

The previous prime is 662078815063. The next prime is 662078815133. The reversal of 662078815068 is 860518870266.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 662078814999 and 662078815017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662078815063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13810596 + ... + 13858452.

It is an arithmetic number, because the mean of its divisors is an integer number (17664196368).

Almost surely, 2^662078815068 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 662078815068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (847881425664).

662078815068 is an abundant number, since it is smaller than the sum of its proper divisors (1033684036260).

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

662078815068 is a wasteful number, since it uses less digits than its factorization.

662078815068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48523 (or 48521 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 57.

The spelling of 662078815068 in words is "six hundred sixty-two billion, seventy-eight million, eight hundred fifteen thousand, sixty-eight".