16214691 has 4 divisors (see below), whose sum is σ = 21619592. Its totient is φ = 10809792.

The previous prime is 16214659. The next prime is 16214699. The reversal of 16214691 is 19641261.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19641261 = 3 ⋅6547087.

It is not a de Polignac number, because 16214691 - 2⁵ = 16214659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16214699) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2702446 + ... + 2702451.

It is an arithmetic number, because the mean of its divisors is an integer number (5404898).

Almost surely, 2^16214691 is an apocalyptic number.

16214691 is a deficient number, since it is larger than the sum of its proper divisors (5404901).

16214691 is an equidigital number, since it uses as much as digits as its factorization.

16214691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5404900.

The product of its digits is 2592, while the sum is 30.

The square root of 16214691 is about 4026.7469500827. The cubic root of 16214691 is about 253.1062633289.

The spelling of 16214691 in words is "sixteen million, two hundred fourteen thousand, six hundred ninety-one".