6560645 has 16 divisors (see below), whose sum is σ = 9690240. Its totient is φ = 4152384.

The previous prime is 6560633. The next prime is 6560647. The reversal of 6560645 is 5460656.

It is a cyclic number.

It is not a de Polignac number, because 6560645 - 2¹⁴ = 6544261 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6560647) 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, 6755 + ... + 7664.

It is an arithmetic number, because the mean of its divisors is an integer number (605640).

Almost surely, 2^6560645 is an apocalyptic number.

6560645 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6560645 is a deficient number, since it is larger than the sum of its proper divisors (3129595).

6560645 is a wasteful number, since it uses less digits than its factorization.

6560645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14444.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 6560645 is about 2561.3756069737. The cubic root of 6560645 is about 187.2041675631.

The spelling of 6560645 in words is "six million, five hundred sixty thousand, six hundred forty-five".