2256629 has 2 divisors, whose sum is σ = 2256630. Its totient is φ = 2256628.

The previous prime is 2256623. The next prime is 2256637. The reversal of 2256629 is 9266522.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2256004 + 625 = 1502^2 + 25^2 .

It is a cyclic number.

It is not a de Polignac number, because 2256629 - 2⁴ = 2256613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2256595 and 2256604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2256623) 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, 1128314 + 1128315.

It is an arithmetic number, because the mean of its divisors is an integer number (1128315).

2^2256629 is an apocalyptic number.

It is an amenable number.

2256629 is a deficient number, since it is larger than the sum of its proper divisors (1).

2256629 is an equidigital number, since it uses as much as digits as its factorization.

2256629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 32.

The square root of 2256629 is about 1502.2080415176. The cubic root of 2256629 is about 131.1656316445.

The spelling of 2256629 in words is "two million, two hundred fifty-six thousand, six hundred twenty-nine".