2646289 has 4 divisors (see below), whose sum is σ = 2678256. Its totient is φ = 2614324.

The previous prime is 2646269. The next prime is 2646353. The reversal of 2646289 is 9826462.

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.

It is a cyclic number.

It is not a de Polignac number, because 2646289 - 2⁹ = 2645777 is a prime.

It is a d-powerful number, because it can be written as 2¹³ + 6⁵ + 4⁵ + 6⁵ + 2¹⁹ + 8⁷ + 9² .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2646269) 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, 15859 + ... + 16024.

It is an arithmetic number, because the mean of its divisors is an integer number (669564).

2^2646289 is an apocalyptic number.

It is an amenable number.

2646289 is a deficient number, since it is larger than the sum of its proper divisors (31967).

2646289 is an equidigital number, since it uses as much as digits as its factorization.

2646289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31966.

The product of its digits is 41472, while the sum is 37.

The square root of 2646289 is about 1626.7418356949. The cubic root of 2646289 is about 138.3181241646.

The spelling of 2646289 in words is "two million, six hundred forty-six thousand, two hundred eighty-nine".