16502065 has 4 divisors (see below), whose sum is σ = 19802484. Its totient is φ = 13201648.

The previous prime is 16502047. The next prime is 16502071. The reversal of 16502065 is 56020561.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10131489 + 6370576 = 3183^2 + 2524^2 .

It is a cyclic number.

It is not a de Polignac number, because 16502065 - 2⁹ = 16501553 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1650202 + ... + 1650211.

It is an arithmetic number, because the mean of its divisors is an integer number (4950621).

Almost surely, 2^16502065 is an apocalyptic number.

It is an amenable number.

16502065 is a deficient number, since it is larger than the sum of its proper divisors (3300419).

16502065 is an equidigital number, since it uses as much as digits as its factorization.

16502065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3300418.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 16502065 is about 4062.2733782945. The cubic root of 16502065 is about 254.5927884880.

The spelling of 16502065 in words is "sixteen million, five hundred two thousand, sixty-five".