2656417 has 2 divisors, whose sum is σ = 2656418. Its totient is φ = 2656416.

The previous prime is 2656399. The next prime is 2656427. The reversal of 2656417 is 7146562.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1437601 + 1218816 = 1199^2 + 1104^2 .

It is a cyclic number.

It is not a de Polignac number, because 2656417 - 2⁷ = 2656289 is a prime.

It is a Chen prime.

2656417 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2656427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1328208 + 1328209.

It is an arithmetic number, because the mean of its divisors is an integer number (1328209).

2^2656417 is an apocalyptic number.

It is an amenable number.

2656417 is a deficient number, since it is larger than the sum of its proper divisors (1).

2656417 is an equidigital number, since it uses as much as digits as its factorization.

2656417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 31.

The square root of 2656417 is about 1629.8518337567. The cubic root of 2656417 is about 138.4943587045.

The spelling of 2656417 in words is "two million, six hundred fifty-six thousand, four hundred seventeen".