66560049 has 20 divisors (see below), whose sum is σ = 105280164. Its totient is φ = 41762304.

The previous prime is 66560041. The next prime is 66560071. The reversal of 66560049 is 94006566.

It is a happy number.

66560049 is a `hidden beast` number, since 6 + 6 + 5 + 600 + 49 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 54863649 + 11696400 = 7407^2 + 3420^2 .

It is not a de Polignac number, because 66560049 - 2³ = 66560041 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 66559995 and 66560022.

It is not an unprimeable number, because it can be changed into a prime (66560041) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 22792 + ... + 25545.

Almost surely, 2^66560049 is an apocalyptic number.

It is an amenable number.

66560049 is a deficient number, since it is larger than the sum of its proper divisors (38720115).

66560049 is a wasteful number, since it uses less digits than its factorization.

66560049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48366 (or 48357 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 66560049 is about 8158.4342247762. The cubic root of 66560049 is about 405.2638609768.

The spelling of 66560049 in words is "sixty-six million, five hundred sixty thousand, forty-nine".