16689045 has 16 divisors (see below), whose sum is σ = 26834112. Its totient is φ = 8856960.

The previous prime is 16688999. The next prime is 16689061. The reversal of 16689045 is 54098661.

It is not a de Polignac number, because 16689045 - 2¹⁸ = 16426901 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16688994 and 16689012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 529 + ... + 5801.

It is an arithmetic number, because the mean of its divisors is an integer number (1677132).

Almost surely, 2^16689045 is an apocalyptic number.

16689045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16689045 is a deficient number, since it is larger than the sum of its proper divisors (10145067).

16689045 is a wasteful number, since it uses less digits than its factorization.

16689045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5492.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 16689045 is about 4085.2227601442. Note that the first 3 decimals coincide. The cubic root of 16689045 is about 255.5507511874.

The spelling of 16689045 in words is "sixteen million, six hundred eighty-nine thousand, forty-five".