2097649 has 4 divisors (see below), whose sum is σ = 2112880. Its totient is φ = 2082420.

The previous prime is 2097643. The next prime is 2097653. The reversal of 2097649 is 9467902.

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: 9467902 = 2 ⋅4733951.

It is a cyclic number.

It is not a de Polignac number, because 2097649 - 2⁵ = 2097617 is a prime.

It is a d-powerful number, because it can be written as 2²¹ + 0 + 9 + 7 + 6³ + 4⁴ + 9 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2097643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7407 + ... + 7684.

It is an arithmetic number, because the mean of its divisors is an integer number (528220).

2^2097649 is an apocalyptic number.

It is an amenable number.

2097649 is a deficient number, since it is larger than the sum of its proper divisors (15231).

2097649 is a wasteful number, since it uses less digits than its factorization.

2097649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15230.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 2097649 is about 1448.3262753952. The cubic root of 2097649 is about 128.0101106922.

It can be divided in two parts, 209764 and 9, that multiplied together give a square (1887876 = 1374²).

The spelling of 2097649 in words is "two million, ninety-seven thousand, six hundred forty-nine".