66662265 has 16 divisors (see below), whose sum is σ = 106823808. Its totient is φ = 35498496.

The previous prime is 66662261. The next prime is 66662291. The reversal of 66662265 is 56226666.

It is not a de Polignac number, because 66662265 - 2² = 66662261 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66662261) 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, 7849 + ... + 13961.

It is an arithmetic number, because the mean of its divisors is an integer number (6676488).

Almost surely, 2^66662265 is an apocalyptic number.

It is an amenable number.

66662265 is a deficient number, since it is larger than the sum of its proper divisors (40161543).

66662265 is a wasteful number, since it uses less digits than its factorization.

66662265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6848.

The product of its digits is 155520, while the sum is 39.

The square root of 66662265 is about 8164.6962588941. The cubic root of 66662265 is about 405.4712088999.

The spelling of 66662265 in words is "sixty-six million, six hundred sixty-two thousand, two hundred sixty-five".