2097644 has 6 divisors (see below), whose sum is σ = 3670884. Its totient is φ = 1048820.

The previous prime is 2097643. The next prime is 2097653. The reversal of 2097644 is 4467902.

It is a super-2 number, since 2×2097644² = 8800220701472, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2²¹ + 0 + 9 + 7 + 6³ + 4 + 4⁴ .

It is a self number, because there is not a number n which added to its sum of digits gives 2097644.

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 as a sum of consecutive naturals, namely, 262202 + ... + 262209.

It is an arithmetic number, because the mean of its divisors is an integer number (611814).

2^2097644 is an apocalyptic number.

It is an amenable number.

2097644 is a deficient number, since it is larger than the sum of its proper divisors (1573240).

2097644 is a wasteful number, since it uses less digits than its factorization.

2097644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524415 (or 524413 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 2097644 is about 1448.3245492637. The cubic root of 2097644 is about 128.0100089830.

It can be divided in two parts, 209764 and 4, that multiplied together give a square (839056 = 916²).

The spelling of 2097644 in words is "two million, ninety-seven thousand, six hundred forty-four".