2866421 has 8 divisors (see below), whose sum is σ = 3167424. Its totient is φ = 2580160.

The previous prime is 2866417. The next prime is 2866429. The reversal of 2866421 is 1246682.

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 2866421 - 2² = 2866417 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2866429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3275 + ... + 4056.

It is an arithmetic number, because the mean of its divisors is an integer number (395928).

2^2866421 is an apocalyptic number.

It is an amenable number.

2866421 is a deficient number, since it is larger than the sum of its proper divisors (301003).

2866421 is a wasteful number, since it uses less digits than its factorization.

2866421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7371.

The product of its digits is 4608, while the sum is 29.

The square root of 2866421 is about 1693.0507966390. The cubic root of 2866421 is about 142.0517730938.

The spelling of 2866421 in words is "two million, eight hundred sixty-six thousand, four hundred twenty-one".