16696919 has 4 divisors (see below), whose sum is σ = 17422896. Its totient is φ = 15970944.

The previous prime is 16696909. The next prime is 16696921. The reversal of 16696919 is 91969661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91969661 = 7 ⋅13138523.

It is a cyclic number.

It is not a de Polignac number, because 16696919 - 2⁴ = 16696903 is a prime.

It is a super-2 number, since 2×16696919² = 557574208185122, 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 (16696909) 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, 362954 + ... + 362999.

It is an arithmetic number, because the mean of its divisors is an integer number (4355724).

Almost surely, 2^16696919 is an apocalyptic number.

16696919 is a deficient number, since it is larger than the sum of its proper divisors (725977).

16696919 is an equidigital number, since it uses as much as digits as its factorization.

16696919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725976.

The product of its digits is 157464, while the sum is 47.

The square root of 16696919 is about 4086.1863638361. The cubic root of 16696919 is about 255.5909350374.

The spelling of 16696919 in words is "sixteen million, six hundred ninety-six thousand, nine hundred nineteen".