16682669 has 4 divisors (see below), whose sum is σ = 16710240. Its totient is φ = 16655100.

The previous prime is 16682647. The next prime is 16682683. The reversal of 16682669 is 96628661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 96628661 = 19 ⋅5085719.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16682669 is a prime.

It is a super-2 number, since 2×16682669² = 556622889927122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16682609) 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, 12857 + ... + 14094.

It is an arithmetic number, because the mean of its divisors is an integer number (4177560).

Almost surely, 2^16682669 is an apocalyptic number.

It is an amenable number.

16682669 is a deficient number, since it is larger than the sum of its proper divisors (27571).

16682669 is an equidigital number, since it uses as much as digits as its factorization.

16682669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27570.

The product of its digits is 186624, while the sum is 44.

The square root of 16682669 is about 4084.4423119932. The cubic root of 16682669 is about 255.5182029073.

The spelling of 16682669 in words is "sixteen million, six hundred eighty-two thousand, six hundred sixty-nine".