16448657 has 4 divisors (see below), whose sum is σ = 17163840. Its totient is φ = 15733476.

The previous prime is 16448651. The next prime is 16448671. The reversal of 16448657 is 75684461.

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: 75684461 = 29 ⋅2609809.

It is a cyclic number.

It is not a de Polignac number, because 16448657 - 2¹⁰ = 16447633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16448651) 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, 357557 + ... + 357602.

It is an arithmetic number, because the mean of its divisors is an integer number (4290960).

Almost surely, 2^16448657 is an apocalyptic number.

It is an amenable number.

16448657 is a deficient number, since it is larger than the sum of its proper divisors (715183).

16448657 is an equidigital number, since it uses as much as digits as its factorization.

16448657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715182.

The product of its digits is 161280, while the sum is 41.

The square root of 16448657 is about 4055.6943918397. The cubic root of 16448657 is about 254.3178332620.

It can be divided in two parts, 1644 and 8657, that added together give a palindrome (10301).

The spelling of 16448657 in words is "sixteen million, four hundred forty-eight thousand, six hundred fifty-seven".