16696069 has 4 divisors (see below), whose sum is σ = 17980396. Its totient is φ = 15411744.

The previous prime is 16696067. The next prime is 16696093. The reversal of 16696069 is 96069661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96069661 = 5869 ⋅16369.

It can be written as a sum of positive squares in 2 ways, for example, as 4536900 + 12159169 = 2130^2 + 3487^2 .

It is a cyclic number.

It is not a de Polignac number, because 16696069 - 2¹ = 16696067 is a prime.

It is a super-2 number, since 2×16696069² = 557517440105522, 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 (16696063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 642144 + ... + 642169.

It is an arithmetic number, because the mean of its divisors is an integer number (4495099).

Almost surely, 2^16696069 is an apocalyptic number.

It is an amenable number.

16696069 is a deficient number, since it is larger than the sum of its proper divisors (1284327).

16696069 is a wasteful number, since it uses less digits than its factorization.

16696069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1284326.

The product of its (nonzero) digits is 104976, while the sum is 43.

The square root of 16696069 is about 4086.0823535509. The cubic root of 16696069 is about 255.5865977905.

The spelling of 16696069 in words is "sixteen million, six hundred ninety-six thousand, sixty-nine".