2245705 has 32 divisors (see below), whose sum is σ = 3548160. Its totient is φ = 1321920.

The previous prime is 2245687. The next prime is 2245721. The reversal of 2245705 is 5075422.

It is not a de Polignac number, because 2245705 - 2⁷ = 2245577 is a prime.

2245705 is a lucky number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 2245705.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 7162 + ... + 7468.

It is an arithmetic number, because the mean of its divisors is an integer number (110880).

2^2245705 is an apocalyptic number.

It is an amenable number.

2245705 is a deficient number, since it is larger than the sum of its proper divisors (1302455).

2245705 is a wasteful number, since it uses less digits than its factorization.

2245705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349.

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 2245705 is about 1498.5676494573. The cubic root of 2245705 is about 130.9536381986.

It can be divided in two parts, 224 and 5705, that added together give a square (5929 = 77²).

The spelling of 2245705 in words is "two million, two hundred forty-five thousand, seven hundred five".