16648517 has 2 divisors, whose sum is σ = 16648518. Its totient is φ = 16648516.

The previous prime is 16648507. The next prime is 16648543. The reversal of 16648517 is 71584661.

16648517 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13147876 + 3500641 = 3626^2 + 1871^2 .

It is a cyclic number.

It is not a de Polignac number, because 16648517 - 2¹⁶ = 16582981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16648507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8324258 + 8324259.

It is an arithmetic number, because the mean of its divisors is an integer number (8324259).

Almost surely, 2^16648517 is an apocalyptic number.

It is an amenable number.

16648517 is a deficient number, since it is larger than the sum of its proper divisors (1).

16648517 is an equidigital number, since it uses as much as digits as its factorization.

16648517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 38.

The square root of 16648517 is about 4080.2594280266. The cubic root of 16648517 is about 255.3437220484.

The spelling of 16648517 in words is "sixteen million, six hundred forty-eight thousand, five hundred seventeen".