66015265 has 8 divisors (see below), whose sum is σ = 79617600. Its totient is φ = 52546032.

The previous prime is 66015247. The next prime is 66015283. The reversal of 66015265 is 56251066.

66015265 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (66015247) and next prime (66015283).

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

It is a cyclic number.

It is not a de Polignac number, because 66015265 - 2⁷ = 66015137 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32179 + ... + 34168.

It is an arithmetic number, because the mean of its divisors is an integer number (9952200).

Almost surely, 2^66015265 is an apocalyptic number.

It is an amenable number.

66015265 is a deficient number, since it is larger than the sum of its proper divisors (13602335).

66015265 is a wasteful number, since it uses less digits than its factorization.

66015265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66551.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 66015265 is about 8124.9778461236. The cubic root of 66015265 is about 404.1551559882.

The spelling of 66015265 in words is "sixty-six million, fifteen thousand, two hundred sixty-five".