16864461 has 12 divisors (see below), whose sum is σ = 24407292. Its totient is φ = 11221056.

The previous prime is 16864447. The next prime is 16864481. The reversal of 16864461 is 16446861.

16864461 is a `hidden beast` number, since 1 + 6 + 8 + 644 + 6 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6502500 + 10361961 = 2550^2 + 3219^2 .

It is not a de Polignac number, because 16864461 - 2⁵ = 16864429 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16864411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4035 + ... + 7071.

It is an arithmetic number, because the mean of its divisors is an integer number (2033941).

Almost surely, 2^16864461 is an apocalyptic number.

It is an amenable number.

16864461 is a deficient number, since it is larger than the sum of its proper divisors (7542831).

16864461 is a wasteful number, since it uses less digits than its factorization.

16864461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3660 (or 3657 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 16864461 is about 4106.6362147139. The cubic root of 16864461 is about 256.4429840327.

The spelling of 16864461 in words is "sixteen million, eight hundred sixty-four thousand, four hundred sixty-one".