16648597 has 4 divisors (see below), whose sum is σ = 19026976. Its totient is φ = 14270220.

The previous prime is 16648591. The next prime is 16648601. The reversal of 16648597 is 79584661.

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: 79584661 = 13 ⋅6121897.

It is a cyclic number.

It is not a de Polignac number, because 16648597 - 2³ = 16648589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16648591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1189179 + ... + 1189192.

It is an arithmetic number, because the mean of its divisors is an integer number (4756744).

Almost surely, 2^16648597 is an apocalyptic number.

It is an amenable number.

16648597 is a deficient number, since it is larger than the sum of its proper divisors (2378379).

16648597 is an equidigital number, since it uses as much as digits as its factorization.

16648597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2378378.

The product of its digits is 362880, while the sum is 46.

The square root of 16648597 is about 4080.2692313131. The cubic root of 16648597 is about 255.3441310430.

The spelling of 16648597 in words is "sixteen million, six hundred forty-eight thousand, five hundred ninety-seven".