16749005 has 32 divisors (see below), whose sum is σ = 25014528. Its totient is φ = 10483200.

The previous prime is 16749001. The next prime is 16749011. The reversal of 16749005 is 50094761.

It is a happy number.

It is not a de Polignac number, because 16749005 - 2² = 16749001 is a prime.

It is a super-3 number, since 3×16749005³ (a number of 23 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16749001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59465 + ... + 59745.

It is an arithmetic number, because the mean of its divisors is an integer number (781704).

Almost surely, 2^16749005 is an apocalyptic number.

It is an amenable number.

16749005 is a deficient number, since it is larger than the sum of its proper divisors (8265523).

16749005 is a wasteful number, since it uses less digits than its factorization.

16749005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 16749005 is about 4092.5548255338. The cubic root of 16749005 is about 255.8564309330.

The spelling of 16749005 in words is "sixteen million, seven hundred forty-nine thousand, five".