16226691 has 16 divisors (see below), whose sum is σ = 23477664. Its totient is φ = 9909504.

The previous prime is 16226681. The next prime is 16226701. The reversal of 16226691 is 19662261.

It is an interprime number because it is at equal distance from previous prime (16226681) and next prime (16226701).

It is not a de Polignac number, because 16226691 - 2⁷ = 16226563 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16226621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3825 + ... + 6861.

It is an arithmetic number, because the mean of its divisors is an integer number (1467354).

Almost surely, 2^16226691 is an apocalyptic number.

16226691 is a deficient number, since it is larger than the sum of its proper divisors (7250973).

16226691 is a wasteful number, since it uses less digits than its factorization.

16226691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3190.

The product of its digits is 7776, while the sum is 33.

The square root of 16226691 is about 4028.2367110189. The cubic root of 16226691 is about 253.1686866832.

The spelling of 16226691 in words is "sixteen million, two hundred twenty-six thousand, six hundred ninety-one".