16487165 has 4 divisors (see below), whose sum is σ = 19784604. Its totient is φ = 13189728.

The previous prime is 16487147. The next prime is 16487171. The reversal of 16487165 is 56178461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56178461 = 5953 ⋅9437.

It can be written as a sum of positive squares in 2 ways, for example, as 10621081 + 5866084 = 3259^2 + 2422^2 .

It is a cyclic number.

It is not a de Polignac number, because 16487165 - 2⁶ = 16487101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1648712 + ... + 1648721.

It is an arithmetic number, because the mean of its divisors is an integer number (4946151).

Almost surely, 2^16487165 is an apocalyptic number.

It is an amenable number.

16487165 is a deficient number, since it is larger than the sum of its proper divisors (3297439).

16487165 is an equidigital number, since it uses as much as digits as its factorization.

16487165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3297438.

The product of its digits is 40320, while the sum is 38.

The square root of 16487165 is about 4060.4390156731. The cubic root of 16487165 is about 254.5161400031.

The spelling of 16487165 in words is "sixteen million, four hundred eighty-seven thousand, one hundred sixty-five".