16506065 has 16 divisors (see below), whose sum is σ = 21886848. Its totient is φ = 11886336.

The previous prime is 16506047. The next prime is 16506073. The reversal of 16506065 is 56060561.

It is a cyclic number.

It is not a de Polignac number, because 16506065 - 2⁶ = 16506001 is a prime.

It is a Duffinian 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, 2267 + ... + 6176.

It is an arithmetic number, because the mean of its divisors is an integer number (1367928).

Almost surely, 2^16506065 is an apocalyptic number.

It is an amenable number.

16506065 is a deficient number, since it is larger than the sum of its proper divisors (5380783).

16506065 is a wasteful number, since it uses less digits than its factorization.

16506065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8488.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 16506065 is about 4062.7656836200. The cubic root of 16506065 is about 254.6133574063.

The spelling of 16506065 in words is "sixteen million, five hundred six thousand, sixty-five".