2645109 has 8 divisors (see below), whose sum is σ = 3918720. Its totient is φ = 1763388.

The previous prime is 2645101. The next prime is 2645129. The reversal of 2645109 is 9015462.

2645109 is a `hidden beast` number, since 2 + 645 + 10 + 9 = 666.

2645109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2645109 - 2³ = 2645101 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: 97967 = 2645109 / (2 + 6 + 4 + 5 + 1 + 0 + 9).

It is a d-powerful number, because it can be written as 2²¹ + 6 + 4⁷ + 5³ + 1 + 0 + 9⁶ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2645101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48957 + ... + 49010.

It is an arithmetic number, because the mean of its divisors is an integer number (489840).

2^2645109 is an apocalyptic number.

It is an amenable number.

2645109 is a deficient number, since it is larger than the sum of its proper divisors (1273611).

2645109 is an equidigital number, since it uses as much as digits as its factorization.

2645109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97976 (or 97970 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 2645109 is about 1626.3791070965. The cubic root of 2645109 is about 138.2975620803.

The spelling of 2645109 in words is "two million, six hundred forty-five thousand, one hundred nine".