2820463666 has 8 divisors (see below), whose sum is σ = 4231033884. Its totient is φ = 1410119040.

The previous prime is 2820463663. The next prime is 2820463703. The reversal of 2820463666 is 6663640282.

It can be written as a sum of positive squares in 2 ways, for example, as 1959921441 + 860542225 = 44271^2 + 29335^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×2820463666³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2820463663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20595 + ... + 77878.

Almost surely, 2^2820463666 is an apocalyptic number.

2820463666 is a deficient number, since it is larger than the sum of its proper divisors (1410570218).

2820463666 is a wasteful number, since it uses less digits than its factorization.

2820463666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112796.

The product of its (nonzero) digits is 497664, while the sum is 43.

The square root of 2820463666 is about 53108.0376779259. The cubic root of 2820463666 is about 1412.8850716756.

The spelling of 2820463666 in words is "two billion, eight hundred twenty million, four hundred sixty-three thousand, six hundred sixty-six".