20560617 has 24 divisors (see below), whose sum is σ = 37028160. Its totient is φ = 10680480.

The previous prime is 20560601. The next prime is 20560649. The reversal of 20560617 is 71606502.

It is not a de Polignac number, because 20560617 - 2⁴ = 20560601 is a prime.

It is a super-4 number, since 4×20560617⁴ (a number of 30 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (20560697) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14142 + ... + 15527.

It is an arithmetic number, because the mean of its divisors is an integer number (1542840).

Almost surely, 2^20560617 is an apocalyptic number.

It is an amenable number.

20560617 is a deficient number, since it is larger than the sum of its proper divisors (16467543).

20560617 is a wasteful number, since it uses less digits than its factorization.

20560617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29693 (or 29690 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 20560617 is about 4534.3816557498. The cubic root of 20560617 is about 273.9546739808.

The spelling of 20560617 in words is "twenty million, five hundred sixty thousand, six hundred seventeen".