256076605 has 8 divisors (see below), whose sum is σ = 310460472. Its totient is φ = 202748928.

The previous prime is 256076603. The next prime is 256076621. The reversal of 256076605 is 506670652.

It can be written as a sum of positive squares in 4 ways, for example, as 28579716 + 227496889 = 5346^2 + 15083^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 256076605 - 2¹ = 256076603 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256076603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 263512 + ... + 264481.

It is an arithmetic number, because the mean of its divisors is an integer number (38807559).

Almost surely, 2^256076605 is an apocalyptic number.

It is an amenable number.

256076605 is a deficient number, since it is larger than the sum of its proper divisors (54383867).

256076605 is an equidigital number, since it uses as much as digits as its factorization.

256076605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528095.

The product of its (nonzero) digits is 75600, while the sum is 37.

The square root of 256076605 is about 16002.3937271897. The cubic root of 256076605 is about 635.0237492926.

The spelling of 256076605 in words is "two hundred fifty-six million, seventy-six thousand, six hundred five".