256834659 has 16 divisors (see below), whose sum is σ = 358344704. Its totient is φ = 163425600.

The previous prime is 256834639. The next prime is 256834663. The reversal of 256834659 is 956438652.

It is not a de Polignac number, because 256834659 - 2¹³ = 256826467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256834639) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12127 + ... + 25704.

It is an arithmetic number, because the mean of its divisors is an integer number (22396544).

Almost surely, 2^256834659 is an apocalyptic number.

256834659 is a deficient number, since it is larger than the sum of its proper divisors (101510045).

256834659 is a wasteful number, since it uses less digits than its factorization.

256834659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37938.

The product of its digits is 1555200, while the sum is 48.

The square root of 256834659 is about 16026.0618680947. The cubic root of 256834659 is about 635.6497443497.

The spelling of 256834659 in words is "two hundred fifty-six million, eight hundred thirty-four thousand, six hundred fifty-nine".