20560737 has 8 divisors (see below), whose sum is σ = 27435520. Its totient is φ = 13696560.

The previous prime is 20560703. The next prime is 20560807. The reversal of 20560737 is 73706502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20560737 - 2¹⁰ = 20559713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20560537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5187 + ... + 8247.

It is an arithmetic number, because the mean of its divisors is an integer number (3429440).

Almost surely, 2^20560737 is an apocalyptic number.

It is an amenable number.

20560737 is a deficient number, since it is larger than the sum of its proper divisors (6874783).

20560737 is a wasteful number, since it uses less digits than its factorization.

20560737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5303.

The product of its (nonzero) digits is 8820, while the sum is 30.

The square root of 20560737 is about 4534.3948879647. The cubic root of 20560737 is about 273.9552069495.

The spelling of 20560737 in words is "twenty million, five hundred sixty thousand, seven hundred thirty-seven".