2646243 has 8 divisors (see below), whose sum is σ = 3920400. Its totient is φ = 1764144.

The previous prime is 2646233. The next prime is 2646247. The reversal of 2646243 is 3426462.

It is not a de Polignac number, because 2646243 - 2⁴ = 2646227 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 98009 = 2646243 / (2 + 6 + 4 + 6 + 2 + 4 + 3).

It is an Ulam number.

It is a d-powerful number, because it can be written as 2⁹ + 6³ + 4⁶ + 6⁷ + 2²¹ + 4⁹ + 3⁷ .

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 7 ways as a sum of consecutive naturals, for example, 48978 + ... + 49031.

It is an arithmetic number, because the mean of its divisors is an integer number (490050).

2^2646243 is an apocalyptic number.

2646243 is a deficient number, since it is larger than the sum of its proper divisors (1274157).

2646243 is an equidigital number, since it uses as much as digits as its factorization.

2646243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98018 (or 98012 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

The square root of 2646243 is about 1626.7276969425. The cubic root of 2646243 is about 138.3173227063.

The spelling of 2646243 in words is "two million, six hundred forty-six thousand, two hundred forty-three".