16689037 has 4 divisors (see below), whose sum is σ = 16722720. Its totient is φ = 16655356.

The previous prime is 16688999. The next prime is 16689061. The reversal of 16689037 is 73098661.

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: 73098661 = 1693 ⋅43177.

It is a cyclic number.

It is not a de Polignac number, because 16689037 - 2⁷ = 16688909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16689077) 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, 16087 + ... + 17092.

It is an arithmetic number, because the mean of its divisors is an integer number (4180680).

Almost surely, 2^16689037 is an apocalyptic number.

It is an amenable number.

16689037 is a deficient number, since it is larger than the sum of its proper divisors (33683).

16689037 is an equidigital number, since it uses as much as digits as its factorization.

16689037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33682.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 16689037 is about 4085.2217810053. The cubic root of 16689037 is about 255.5507103541.

The spelling of 16689037 in words is "sixteen million, six hundred eighty-nine thousand, thirty-seven".