662646646266 has 64 divisors (see below), whose sum is σ = 1536051358080. Its totient is φ = 188637845760.

The previous prime is 662646646253. The next prime is 662646646297.

662646646266 is nontrivially palindromic in base 10.

662646646266 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 4607701 + ... + 4749336.

It is an arithmetic number, because the mean of its divisors is an integer number (24000802470).

Almost surely, 2^662646646266 is an apocalyptic number.

662646646266 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

662646646266 is an abundant number, since it is smaller than the sum of its proper divisors (873404711814).

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

662646646266 is a wasteful number, since it uses less digits than its factorization.

662646646266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9357119.

The product of its digits is 107495424, while the sum is 60.

The spelling of 662646646266 in words is "six hundred sixty-two billion, six hundred forty-six million, six hundred forty-six thousand, two hundred sixty-six".