3256661773 has 2 divisors, whose sum is σ = 3256661774. Its totient is φ = 3256661772.

The previous prime is 3256661767. The next prime is 3256661789. The reversal of 3256661773 is 3771666523.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3078252324 + 178409449 = 55482^2 + 13357^2 .

It is a cyclic number.

It is not a de Polignac number, because 3256661773 - 2¹⁷ = 3256530701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3256661743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1628330886 + 1628330887.

It is an arithmetic number, because the mean of its divisors is an integer number (1628330887).

Almost surely, 2^3256661773 is an apocalyptic number.

It is an amenable number.

3256661773 is a deficient number, since it is larger than the sum of its proper divisors (1).

3256661773 is an equidigital number, since it uses as much as digits as its factorization.

3256661773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 952560, while the sum is 46.

The square root of 3256661773 is about 57067.1689590433. The cubic root of 3256661773 is about 1482.2594191892.

The spelling of 3256661773 in words is "three billion, two hundred fifty-six million, six hundred sixty-one thousand, seven hundred seventy-three".