214256865 has 16 divisors (see below), whose sum is σ = 362976768. Its totient is φ = 107548416.

The previous prime is 214256851. The next prime is 214256897. The reversal of 214256865 is 568652412.

It is not a de Polignac number, because 214256865 - 2⁷ = 214256737 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 419857 + ... + 420366.

It is an arithmetic number, because the mean of its divisors is an integer number (22686048).

Almost surely, 2^214256865 is an apocalyptic number.

It is an amenable number.

214256865 is a deficient number, since it is larger than the sum of its proper divisors (148719903).

214256865 is a wasteful number, since it uses less digits than its factorization.

214256865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840248.

The product of its digits is 115200, while the sum is 39.

The square root of 214256865 is about 14637.5156703588. The cubic root of 214256865 is about 598.3816248054.

The spelling of 214256865 in words is "two hundred fourteen million, two hundred fifty-six thousand, eight hundred sixty-five".