16216065 has 32 divisors (see below), whose sum is σ = 29111040. Its totient is φ = 8563968.

The previous prime is 16216061. The next prime is 16216073. The reversal of 16216065 is 56061261.

It is a happy number.

It is not a de Polignac number, because 16216065 - 2² = 16216061 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (16216061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14724 + ... + 15786.

It is an arithmetic number, because the mean of its divisors is an integer number (909720).

It is a Proth number, since it is equal to 3959 ⋅ 2¹² + 1 and 3959 < 2¹².

Almost surely, 2^16216065 is an apocalyptic number.

16216065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16216065 is a deficient number, since it is larger than the sum of its proper divisors (12894975).

16216065 is a wasteful number, since it uses less digits than its factorization.

16216065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1190 (or 1184 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 16216065 is about 4026.9175556497. The cubic root of 16216065 is about 253.1134123639.

The spelling of 16216065 in words is "sixteen million, two hundred sixteen thousand, sixty-five".