2066297856 has 352 divisors, whose sum is σ = 6720710400. Its totient is φ = 563576832.

The previous prime is 2066297809. The next prime is 2066297867. The reversal of 2066297856 is 6587926602.

It is a junction number, because it is equal to n+sod(n) for n = 2066297799 and 2066297808.

It is a congruent number.

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, 38986726 + ... + 38986778.

Almost surely, 2^2066297856 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 2066297856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3360355200).

2066297856 is an abundant number, since it is smaller than the sum of its proper divisors (4654412544).

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

2066297856 is an equidigital number, since it uses as much as digits as its factorization.

2066297856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134 (or 102 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 51.

The square root of 2066297856 is about 45456.5490991122. The cubic root of 2066297856 is about 1273.6916695379.

The spelling of 2066297856 in words is "two billion, sixty-six million, two hundred ninety-seven thousand, eight hundred fifty-six".