2608021 has 8 divisors (see below), whose sum is σ = 2974104. Its totient is φ = 2265600.

The previous prime is 2608013. The next prime is 2608033. The reversal of 2608021 is 1208062.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 324900 + 2283121 = 570^2 + 1511^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2608021 - 2³ = 2608013 is a prime.

It is a Duffinian number.

2608021 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2608021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2608091) 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 7 ways as a sum of consecutive naturals, for example, 5680 + ... + 6121.

It is an arithmetic number, because the mean of its divisors is an integer number (371763).

2^2608021 is an apocalyptic number.

It is an amenable number.

2608021 is a deficient number, since it is larger than the sum of its proper divisors (366083).

2608021 is a wasteful number, since it uses less digits than its factorization.

2608021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11831.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 2608021 is about 1614.9368408703. The cubic root of 2608021 is about 137.6481444620.

It can be divided in two parts, 260 and 8021, that added together give a square (8281 = 91²).

The spelling of 2608021 in words is "two million, six hundred eight thousand, twenty-one".