256610353 has 8 divisors (see below), whose sum is σ = 259999488. Its totient is φ = 253228464.

The previous prime is 256610329. The next prime is 256610399. The reversal of 256610353 is 353016652.

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 256610353 - 2¹⁷ = 256479281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256610303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129075 + ... + 131047.

It is an arithmetic number, because the mean of its divisors is an integer number (32499936).

Almost surely, 2^256610353 is an apocalyptic number.

It is an amenable number.

256610353 is a deficient number, since it is larger than the sum of its proper divisors (3389135).

256610353 is a wasteful number, since it uses less digits than its factorization.

256610353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3623.

The product of its (nonzero) digits is 16200, while the sum is 31.

The square root of 256610353 is about 16019.0621760451. The cubic root of 256610353 is about 635.4646426717.

The spelling of 256610353 in words is "two hundred fifty-six million, six hundred ten thousand, three hundred fifty-three".