2867021 has 2 divisors, whose sum is σ = 2867022. Its totient is φ = 2867020.

The previous prime is 2867017. The next prime is 2867023. The reversal of 2867021 is 1207682.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1590121 + 1276900 = 1261^2 + 1130^2 .

It is a cyclic number.

It is not a de Polignac number, because 2867021 - 2² = 2867017 is a prime.

Together with 2867023, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2867023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1433510 + 1433511.

It is an arithmetic number, because the mean of its divisors is an integer number (1433511).

2^2867021 is an apocalyptic number.

It is an amenable number.

2867021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2867021 is an equidigital number, since it uses as much as digits as its factorization.

2867021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 2867021 is about 1693.2279822871. The cubic root of 2867021 is about 142.0616838405.

The spelling of 2867021 in words is "two million, eight hundred sixty-seven thousand, twenty-one".