16464005 has 4 divisors (see below), whose sum is σ = 19756812. Its totient is φ = 13171200.

The previous prime is 16463999. The next prime is 16464011. The reversal of 16464005 is 50046461.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50046461 = 3301 ⋅15161.

It is an interprime number because it is at equal distance from previous prime (16463999) and next prime (16464011).

It can be written as a sum of positive squares in 2 ways, for example, as 4255969 + 12208036 = 2063^2 + 3494^2 .

It is not a de Polignac number, because 16464005 - 2⁴ = 16463989 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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1646396 + ... + 1646405.

It is an arithmetic number, because the mean of its divisors is an integer number (4939203).

Almost surely, 2^16464005 is an apocalyptic number.

It is an amenable number.

16464005 is a deficient number, since it is larger than the sum of its proper divisors (3292807).

16464005 is an equidigital number, since it uses as much as digits as its factorization.

16464005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3292806.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 16464005 is about 4057.5861050630. The cubic root of 16464005 is about 254.3969087493.

The spelling of 16464005 in words is "sixteen million, four hundred sixty-four thousand, five".