214688091 has 8 divisors (see below), whose sum is σ = 286617664. Its totient is φ = 142941960.

The previous prime is 214688083. The next prime is 214688099. The reversal of 214688091 is 190886412.

It is an interprime number because it is at equal distance from previous prime (214688083) and next prime (214688099).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 214688091 - 2³ = 214688083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (214688099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43105 + ... + 47826.

It is an arithmetic number, because the mean of its divisors is an integer number (35827208).

Almost surely, 2^214688091 is an apocalyptic number.

214688091 is a deficient number, since it is larger than the sum of its proper divisors (71929573).

214688091 is an equidigital number, since it uses as much as digits as its factorization.

214688091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91721.

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 214688091 is about 14652.2384296735. The cubic root of 214688091 is about 598.7828018286.

The spelling of 214688091 in words is "two hundred fourteen million, six hundred eighty-eight thousand, ninety-one".