66326265 has 48 divisors (see below), whose sum is σ = 122557968. Its totient is φ = 33067008.

The previous prime is 66326257. The next prime is 66326269. The reversal of 66326265 is 56262366.

It can be written as a sum of positive squares in 8 ways, for example, as 12787776 + 53538489 = 3576^2 + 7317^2 .

It is not a de Polignac number, because 66326265 - 2³ = 66326257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66326269) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 211749 + ... + 212061.

It is an arithmetic number, because the mean of its divisors is an integer number (2553291).

Almost surely, 2^66326265 is an apocalyptic number.

It is an amenable number.

66326265 is a deficient number, since it is larger than the sum of its proper divisors (56231703).

66326265 is a wasteful number, since it uses less digits than its factorization.

66326265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618 (or 615 counting only the distinct ones).

The product of its digits is 77760, while the sum is 36.

The square root of 66326265 is about 8144.0938722488. The cubic root of 66326265 is about 404.7888245214.

The spelling of 66326265 in words is "sixty-six million, three hundred twenty-six thousand, two hundred sixty-five".