16722086 has 4 divisors (see below), whose sum is σ = 25083132. Its totient is φ = 8361042.

The previous prime is 16722077. The next prime is 16722089. The reversal of 16722086 is 68022761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68022761 = 37 ⋅1838453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16722089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4180520 + ... + 4180523.

It is an arithmetic number, because the mean of its divisors is an integer number (6270783).

Almost surely, 2^16722086 is an apocalyptic number.

16722086 is a deficient number, since it is larger than the sum of its proper divisors (8361046).

16722086 is an equidigital number, since it uses as much as digits as its factorization.

16722086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8361045.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 16722086 is about 4089.2647260846. The cubic root of 16722086 is about 255.7192866197.

The spelling of 16722086 in words is "sixteen million, seven hundred twenty-two thousand, eighty-six".