66262145 has 4 divisors (see below), whose sum is σ = 79514580. Its totient is φ = 53009712.

The previous prime is 66262127. The next prime is 66262169. The reversal of 66262145 is 54126266.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 50013184 + 16248961 = 7072^2 + 4031^2 .

It is a cyclic number.

It is not a de Polignac number, because 66262145 - 2⁸ = 66261889 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6626210 + ... + 6626219.

It is an arithmetic number, because the mean of its divisors is an integer number (19878645).

Almost surely, 2^66262145 is an apocalyptic number.

It is an amenable number.

66262145 is a deficient number, since it is larger than the sum of its proper divisors (13252435).

66262145 is a wasteful number, since it uses less digits than its factorization.

66262145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13252434.

The product of its digits is 17280, while the sum is 32.

The square root of 66262145 is about 8140.1563252802. The cubic root of 66262145 is about 404.6583411309.

The spelling of 66262145 in words is "sixty-six million, two hundred sixty-two thousand, one hundred forty-five".