256696195 has 16 divisors (see below), whose sum is σ = 361556928. Its totient is φ = 171262080.

The previous prime is 256696183. The next prime is 256696217. The reversal of 256696195 is 591696652.

It is not a de Polignac number, because 256696195 - 2⁵ = 256696163 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 97816 + ... + 100405.

It is an arithmetic number, because the mean of its divisors is an integer number (22597308).

Almost surely, 2^256696195 is an apocalyptic number.

256696195 is a deficient number, since it is larger than the sum of its proper divisors (104860733).

256696195 is a wasteful number, since it uses less digits than its factorization.

256696195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198270.

The product of its digits is 874800, while the sum is 49.

The square root of 256696195 is about 16021.7413223407. The cubic root of 256696195 is about 635.5354938976.

The spelling of 256696195 in words is "two hundred fifty-six million, six hundred ninety-six thousand, one hundred ninety-five".