1666802682 has 24 divisors (see below), whose sum is σ = 3613087296. Its totient is φ = 555342216.

The previous prime is 1666802681. The next prime is 1666802717. The reversal of 1666802682 is 2862086661.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1666802681) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20383 + ... + 61229.

It is an arithmetic number, because the mean of its divisors is an integer number (150545304).

Almost surely, 2^1666802682 is an apocalyptic number.

1666802682 is an abundant number, since it is smaller than the sum of its proper divisors (1946284614).

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

1666802682 is a wasteful number, since it uses less digits than its factorization.

1666802682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43122 (or 43119 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The square root of 1666802682 is about 40826.4948532200. The cubic root of 1666802682 is about 1185.6633534212.

The spelling of 1666802682 in words is "one billion, six hundred sixty-six million, eight hundred two thousand, six hundred eighty-two".