16768669 has 4 divisors (see below), whose sum is σ = 16922620. Its totient is φ = 16614720.

The previous prime is 16768657. The next prime is 16768673. The reversal of 16768669 is 96686761.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7496644 + 9272025 = 2738^2 + 3045^2 .

It is a cyclic number.

It is not a de Polignac number, because 16768669 - 2²³ = 8380061 is a prime.

It is a super-2 number, since 2×16768669² = 562376520063122, 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 (16768639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76812 + ... + 77029.

It is an arithmetic number, because the mean of its divisors is an integer number (4230655).

Almost surely, 2^16768669 is an apocalyptic number.

It is an amenable number.

16768669 is a deficient number, since it is larger than the sum of its proper divisors (153951).

16768669 is a wasteful number, since it uses less digits than its factorization.

16768669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153950.

The product of its digits is 653184, while the sum is 49.

The square root of 16768669 is about 4094.9565321258. The cubic root of 16768669 is about 255.9565203257.

The spelling of 16768669 in words is "sixteen million, seven hundred sixty-eight thousand, six hundred sixty-nine".