2356643 has 2 divisors, whose sum is σ = 2356644. Its totient is φ = 2356642.

The previous prime is 2356621. The next prime is 2356661. The reversal of 2356643 is 3466532.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2356643 - 2¹⁴ = 2340259 is a prime.

It is a d-powerful number, because it can be written as 2²¹ + 3⁴ + 5⁷ + 6 + 6² + 4⁶ + 3¹¹ .

It is not a weakly prime, because it can be changed into another prime (2356663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1178321 + 1178322.

It is an arithmetic number, because the mean of its divisors is an integer number (1178322).

2^2356643 is an apocalyptic number.

2356643 is a deficient number, since it is larger than the sum of its proper divisors (1).

2356643 is an equidigital number, since it uses as much as digits as its factorization.

2356643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 29.

The square root of 2356643 is about 1535.1361503137. The cubic root of 2356643 is about 133.0754466690.

The spelling of 2356643 in words is "two million, three hundred fifty-six thousand, six hundred forty-three".