2167643 has 2 divisors, whose sum is σ = 2167644. Its totient is φ = 2167642.

The previous prime is 2167621. The next prime is 2167661. The reversal of 2167643 is 3467612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2167643 - 2⁶ = 2167579 is a prime.

It is a d-powerful number, because it can be written as 2²¹ + 1 + 6 + 7² + 6⁶ + 4⁶ + 3⁹ .

It is not a weakly prime, because it can be changed into another prime (2467643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1083821 + 1083822.

It is an arithmetic number, because the mean of its divisors is an integer number (1083822).

2^2167643 is an apocalyptic number.

2167643 is a deficient number, since it is larger than the sum of its proper divisors (1).

2167643 is an equidigital number, since it uses as much as digits as its factorization.

2167643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 29.

The square root of 2167643 is about 1472.2917509787. The cubic root of 2167643 is about 129.4183680758.

The spelling of 2167643 in words is "two million, one hundred sixty-seven thousand, six hundred forty-three".