256898587 has 8 divisors (see below), whose sum is σ = 280369152. Its totient is φ = 233447400.

The previous prime is 256898573. The next prime is 256898597. The reversal of 256898587 is 785898652.

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 256898587 - 2¹¹ = 256896539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256898507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47958 + ... + 53044.

It is an arithmetic number, because the mean of its divisors is an integer number (35046144).

Almost surely, 2^256898587 is an apocalyptic number.

256898587 is a deficient number, since it is larger than the sum of its proper divisors (23470565).

256898587 is a wasteful number, since it uses less digits than its factorization.

256898587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9689.

The product of its digits is 9676800, while the sum is 58.

The square root of 256898587 is about 16028.0562452220. The cubic root of 256898587 is about 635.7024792440.

The spelling of 256898587 in words is "two hundred fifty-six million, eight hundred ninety-eight thousand, five hundred eighty-seven".