16261617 has 4 divisors (see below), whose sum is σ = 21682160. Its totient is φ = 10841076.

The previous prime is 16261607. The next prime is 16261633. The reversal of 16261617 is 71616261.

16261617 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71616261 = 3 ⋅23872087.

It is not a de Polignac number, because 16261617 - 2¹¹ = 16259569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16261607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2710267 + ... + 2710272.

It is an arithmetic number, because the mean of its divisors is an integer number (5420540).

Almost surely, 2^16261617 is an apocalyptic number.

It is an amenable number.

16261617 is a deficient number, since it is larger than the sum of its proper divisors (5420543).

16261617 is an equidigital number, since it uses as much as digits as its factorization.

16261617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5420542.

The product of its digits is 3024, while the sum is 30.

The square root of 16261617 is about 4032.5695282289. The cubic root of 16261617 is about 253.3501948995.

Adding to 16261617 its reverse (71616261), we get a palindrome (87877878).

The spelling of 16261617 in words is "sixteen million, two hundred sixty-one thousand, six hundred seventeen".