66115265 has 8 divisors (see below), whose sum is σ = 80522880. Its totient is φ = 52102512.

The previous prime is 66115249. The next prime is 66115279. The reversal of 66115265 is 56251166.

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 66115265 - 2⁴ = 66115249 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98345 + ... + 99014.

It is an arithmetic number, because the mean of its divisors is an integer number (10065360).

Almost surely, 2^66115265 is an apocalyptic number.

It is an amenable number.

66115265 is a deficient number, since it is larger than the sum of its proper divisors (14407615).

66115265 is a wasteful number, since it uses less digits than its factorization.

66115265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197431.

The product of its digits is 10800, while the sum is 32.

The square root of 66115265 is about 8131.1293803506. The cubic root of 66115265 is about 404.3591245986.

The spelling of 66115265 in words is "sixty-six million, one hundred fifteen thousand, two hundred sixty-five".