2256673 has 2 divisors, whose sum is σ = 2256674. Its totient is φ = 2256672.

The previous prime is 2256637. The next prime is 2256677. The reversal of 2256673 is 3766522.

Together with previous prime (2256637) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1817104 + 439569 = 1348^2 + 663^2 .

It is a cyclic number.

It is not a de Polignac number, because 2256673 - 2¹⁷ = 2125601 is a prime.

It is a d-powerful number, because it can be written as 2⁷ + 2¹³ + 5⁹ + 6³ + 6³ + 7⁶ + 3¹¹ .

2256673 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2256677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1128336 + 1128337.

It is an arithmetic number, because the mean of its divisors is an integer number (1128337).

2^2256673 is an apocalyptic number.

It is an amenable number.

2256673 is a deficient number, since it is larger than the sum of its proper divisors (1).

2256673 is an equidigital number, since it uses as much as digits as its factorization.

2256673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 31.

The square root of 2256673 is about 1502.2226865548. Note that the first 3 decimals coincide. The cubic root of 2256673 is about 131.1664841330.

The spelling of 2256673 in words is "two million, two hundred fifty-six thousand, six hundred seventy-three".