2656243 has 2 divisors, whose sum is σ = 2656244. Its totient is φ = 2656242.

The previous prime is 2656229. The next prime is 2656261. The reversal of 2656243 is 3426562.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2656243 - 2⁵ = 2656211 is a prime.

It is not a weakly prime, because it can be changed into another prime (2656273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1328121 + 1328122.

It is an arithmetic number, because the mean of its divisors is an integer number (1328122).

2^2656243 is an apocalyptic number.

2656243 is a deficient number, since it is larger than the sum of its proper divisors (1).

2656243 is an equidigital number, since it uses as much as digits as its factorization.

2656243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 28.

The square root of 2656243 is about 1629.7984537973. The cubic root of 2656243 is about 138.4913347635.

The spelling of 2656243 in words is "two million, six hundred fifty-six thousand, two hundred forty-three".