2955643 has 4 divisors (see below), whose sum is σ = 2962440. Its totient is φ = 2948848.

The previous prime is 2955629. The next prime is 2955653. The reversal of 2955643 is 3465592.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2955643 - 2⁹ = 2955131 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2955599 and 2955608.

It is not an unprimeable number, because it can be changed into a prime (2955613) 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 in 3 ways as a sum of consecutive naturals, for example, 2698 + ... + 3631.

It is an arithmetic number, because the mean of its divisors is an integer number (740610).

2^2955643 is an apocalyptic number.

2955643 is a deficient number, since it is larger than the sum of its proper divisors (6797).

2955643 is an equidigital number, since it uses as much as digits as its factorization.

2955643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6796.

The product of its digits is 32400, while the sum is 34.

The square root of 2955643 is about 1719.1983597014. The cubic root of 2955643 is about 143.5106039342.

The spelling of 2955643 in words is "two million, nine hundred fifty-five thousand, six hundred forty-three".