2646249 has 4 divisors (see below), whose sum is σ = 3528336. Its totient is φ = 1764164.

The previous prime is 2646247. The next prime is 2646269. The reversal of 2646249 is 9426462.

It is a happy number.

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 2646249 - 2¹ = 2646247 is a prime.

It is a D-number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2646247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 441039 + ... + 441044.

It is an arithmetic number, because the mean of its divisors is an integer number (882084).

2^2646249 is an apocalyptic number.

It is an amenable number.

2646249 is a deficient number, since it is larger than the sum of its proper divisors (882087).

2646249 is an equidigital number, since it uses as much as digits as its factorization.

2646249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882086.

The product of its digits is 20736, while the sum is 33.

The square root of 2646249 is about 1626.7295411346. The cubic root of 2646249 is about 138.3174272449.

The spelling of 2646249 in words is "two million, six hundred forty-six thousand, two hundred forty-nine".