2866670861 has 8 divisors (see below), whose sum is σ = 2879112600. Its totient is φ = 2854242880.

The previous prime is 2866670831. The next prime is 2866670879. The reversal of 2866670861 is 1680766682.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 487084900 + 2379585961 = 22070^2 + 48781^2 .

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 2866670861 - 2¹⁴ = 2866654477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2866670831) 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, 748331 + ... + 752151.

It is an arithmetic number, because the mean of its divisors is an integer number (359889075).

Almost surely, 2^2866670861 is an apocalyptic number.

It is an amenable number.

2866670861 is a deficient number, since it is larger than the sum of its proper divisors (12441739).

2866670861 is a wasteful number, since it uses less digits than its factorization.

2866670861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6879.

The product of its (nonzero) digits is 1161216, while the sum is 50.

The square root of 2866670861 is about 53541.3005165172. The cubic root of 2866670861 is about 1420.5590044361.

The spelling of 2866670861 in words is "two billion, eight hundred sixty-six million, six hundred seventy thousand, eight hundred sixty-one".