66260145 has 32 divisors (see below), whose sum is σ = 122637312. Its totient is φ = 29921472.

The previous prime is 66260143. The next prime is 66260167. The reversal of 66260145 is 54106266.

It is not a de Polignac number, because 66260145 - 2¹ = 66260143 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66260143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4914 + ... + 12516.

It is an arithmetic number, because the mean of its divisors is an integer number (3832416).

Almost surely, 2^66260145 is an apocalyptic number.

It is an amenable number.

66260145 is a deficient number, since it is larger than the sum of its proper divisors (56377167).

66260145 is a wasteful number, since it uses less digits than its factorization.

66260145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7701.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 66260145 is about 8140.0334765896. The cubic root of 66260145 is about 404.6542698027.

The spelling of 66260145 in words is "sixty-six million, two hundred sixty thousand, one hundred forty-five".