4642643 has 2 divisors, whose sum is σ = 4642644. Its totient is φ = 4642642.

The previous prime is 4642621. The next prime is 4642657. The reversal of 4642643 is 3462464.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4642643 - 2⁸ = 4642387 is a prime.

It is a d-powerful number, because it can be written as 4⁵ + 6³ + 4⁹ + 2⁵ + 6⁵ + 4¹¹ + 3¹¹ .

It is not a weakly prime, because it can be changed into another prime (4642843) 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, 2321321 + 2321322.

It is an arithmetic number, because the mean of its divisors is an integer number (2321322).

Almost surely, 2^4642643 is an apocalyptic number.

4642643 is a deficient number, since it is larger than the sum of its proper divisors (1).

4642643 is an equidigital number, since it uses as much as digits as its factorization.

4642643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 29.

The square root of 4642643 is about 2154.6793264892. The cubic root of 4642643 is about 166.8226810227.

The spelling of 4642643 in words is "four million, six hundred forty-two thousand, six hundred forty-three".