66848065 has 16 divisors (see below), whose sum is σ = 81536400. Its totient is φ = 52607232.

The previous prime is 66848057. The next prime is 66848069. The reversal of 66848065 is 56084866.

It can be written as a sum of positive squares in 8 ways, for example, as 278784 + 66569281 = 528^2 + 8159^2 .

It is a cyclic number.

It is not a de Polignac number, because 66848065 - 2³ = 66848057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66848069) 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, 93931 + ... + 94639.

It is an arithmetic number, because the mean of its divisors is an integer number (5096025).

Almost surely, 2^66848065 is an apocalyptic number.

It is an amenable number.

66848065 is a deficient number, since it is larger than the sum of its proper divisors (14688335).

66848065 is a wasteful number, since it uses less digits than its factorization.

66848065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 996.

The product of its (nonzero) digits is 276480, while the sum is 43.

The square root of 66848065 is about 8176.0665970869. The cubic root of 66848065 is about 405.8475670815.

The spelling of 66848065 in words is "sixty-six million, eight hundred forty-eight thousand, sixty-five".