2564745 has 16 divisors (see below), whose sum is σ = 4172352. Its totient is φ = 1344960.

The previous prime is 2564741. The next prime is 2564747. The reversal of 2564745 is 5474652.

It is not a de Polignac number, because 2564745 - 2² = 2564741 is a prime.

It is a d-powerful number, because it can be written as 2¹⁹ + 5⁷ + 6⁵ + 4³ + 7³ + 4⁵ + 5⁹ .

It is not an unprimeable number, because it can be changed into a prime (2564741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 487 + ... + 2316.

It is an arithmetic number, because the mean of its divisors is an integer number (260772).

2^2564745 is an apocalyptic number.

It is an amenable number.

2564745 is a deficient number, since it is larger than the sum of its proper divisors (1607607).

2564745 is a wasteful number, since it uses less digits than its factorization.

2564745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2872.

The product of its digits is 33600, while the sum is 33.

The square root of 2564745 is about 1601.4821260320. The cubic root of 2564745 is about 136.8825426923.

The spelling of 2564745 in words is "two million, five hundred sixty-four thousand, seven hundred forty-five".