256741611 has 32 divisors (see below), whose sum is σ = 408744960. Its totient is φ = 140241024.

The previous prime is 256741603. The next prime is 256741613. The reversal of 256741611 is 116147652.

It is not a de Polignac number, because 256741611 - 2³ = 256741603 is a prime.

It is not an unprimeable number, because it can be changed into a prime (256741613) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60681 + ... + 64773.

It is an arithmetic number, because the mean of its divisors is an integer number (12773280).

Almost surely, 2^256741611 is an apocalyptic number.

256741611 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

256741611 is a deficient number, since it is larger than the sum of its proper divisors (152003349).

256741611 is a wasteful number, since it uses less digits than its factorization.

256741611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4235.

The product of its digits is 10080, while the sum is 33.

The square root of 256741611 is about 16023.1585837500. The cubic root of 256741611 is about 635.5729724144.

The spelling of 256741611 in words is "two hundred fifty-six million, seven hundred forty-one thousand, six hundred eleven".