2866871021 has 8 divisors (see below), whose sum is σ = 3306483840. Its totient is φ = 2434773168.

The previous prime is 2866870943. The next prime is 2866871023. The reversal of 2866871021 is 1201786682.

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

It is a cyclic number.

It is not a de Polignac number, because 2866871021 - 2¹⁰ = 2866869997 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2866871021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2866871023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1877921 + ... + 1879446.

It is an arithmetic number, because the mean of its divisors is an integer number (413310480).

Almost surely, 2^2866871021 is an apocalyptic number.

It is an amenable number.

2866871021 is a deficient number, since it is larger than the sum of its proper divisors (439612819).

2866871021 is a wasteful number, since it uses less digits than its factorization.

2866871021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3757483.

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 2866871021 is about 53543.1696951161. The cubic root of 2866871021 is about 1420.5920663032.

The spelling of 2866871021 in words is "two billion, eight hundred sixty-six million, eight hundred seventy-one thousand, twenty-one".