265440673 has 2 divisors, whose sum is σ = 265440674. Its totient is φ = 265440672.

The previous prime is 265440653. The next prime is 265440689. The reversal of 265440673 is 376044562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 250019344 + 15421329 = 15812^2 + 3927^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-265440673 is a prime.

It is not a weakly prime, because it can be changed into another prime (265440613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132720336 + 132720337.

It is an arithmetic number, because the mean of its divisors is an integer number (132720337).

Almost surely, 2^265440673 is an apocalyptic number.

It is an amenable number.

265440673 is a deficient number, since it is larger than the sum of its proper divisors (1).

265440673 is an equidigital number, since it uses as much as digits as its factorization.

265440673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 37.

The square root of 265440673 is about 16292.3501374111. The cubic root of 265440673 is about 642.6716709834.

The spelling of 265440673 in words is "two hundred sixty-five million, four hundred forty thousand, six hundred seventy-three".