16636465 has 8 divisors (see below), whose sum is σ = 19989288. Its totient is φ = 13292160.

The previous prime is 16636463. The next prime is 16636483. The reversal of 16636465 is 56463661.

It can be written as a sum of positive squares in 4 ways, for example, as 7969329 + 8667136 = 2823^2 + 2944^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16636465 - 2¹ = 16636463 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (16636463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3555 + ... + 6775.

It is an arithmetic number, because the mean of its divisors is an integer number (2498661).

Almost surely, 2^16636465 is an apocalyptic number.

It is an amenable number.

16636465 is a deficient number, since it is larger than the sum of its proper divisors (3352823).

16636465 is a wasteful number, since it uses less digits than its factorization.

16636465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4259.

The product of its digits is 77760, while the sum is 37.

The square root of 16636465 is about 4078.7822937735. The cubic root of 16636465 is about 255.2820920260.

It can be divided in two parts, 1663 and 6465, that added together give a triangular number (8128 = T₁₂₇).

The spelling of 16636465 in words is "sixteen million, six hundred thirty-six thousand, four hundred sixty-five".