16436961 has 6 divisors (see below), whose sum is σ = 23742290. Its totient is φ = 10957968.

The previous prime is 16436947. The next prime is 16436969. The reversal of 16436961 is 16963461.

16436961 is a `hidden beast` number, since 1 + 643 + 6 + 9 + 6 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 14630625 + 1806336 = 3825^2 + 1344^2 .

It is not a de Polignac number, because 16436961 - 2¹⁴ = 16420577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16436969) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 913156 + ... + 913173.

Almost surely, 2^16436961 is an apocalyptic number.

It is an amenable number.

16436961 is a deficient number, since it is larger than the sum of its proper divisors (7305329).

16436961 is a wasteful number, since it uses less digits than its factorization.

16436961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1826335 (or 1826332 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 16436961 is about 4054.2522121841. The cubic root of 16436961 is about 254.2575404637.

The spelling of 16436961 in words is "sixteen million, four hundred thirty-six thousand, nine hundred sixty-one".