256741603 has 2 divisors, whose sum is σ = 256741604. Its totient is φ = 256741602.

The previous prime is 256741601. The next prime is 256741613. The reversal of 256741603 is 306147652.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 256741603 - 2¹ = 256741601 is a prime.

It is a super-2 number, since 2×256741603² = 131832501422019218, which contains 22 as substring.

Together with 256741601, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (256741601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128370801 + 128370802.

It is an arithmetic number, because the mean of its divisors is an integer number (128370802).

Almost surely, 2^256741603 is an apocalyptic number.

256741603 is a deficient number, since it is larger than the sum of its proper divisors (1).

256741603 is an equidigital number, since it uses as much as digits as its factorization.

256741603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 256741603 is about 16023.1583341113. The cubic root of 256741603 is about 635.5729658130.

The spelling of 256741603 in words is "two hundred fifty-six million, seven hundred forty-one thousand, six hundred three".