66468265 has 4 divisors (see below), whose sum is σ = 79761924. Its totient is φ = 53174608.

The previous prime is 66468211. The next prime is 66468277. The reversal of 66468265 is 56286466.

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 9511056 + 56957209 = 3084^2 + 7547^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66468265 is a prime.

It is a super-2 number, since 2×66468265² = 8836060504220450, which contains 22 as substring.

It is a Duffinian 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, 6646822 + ... + 6646831.

It is an arithmetic number, because the mean of its divisors is an integer number (19940481).

Almost surely, 2^66468265 is an apocalyptic number.

It is an amenable number.

66468265 is a deficient number, since it is larger than the sum of its proper divisors (13293659).

66468265 is a wasteful number, since it uses less digits than its factorization.

66468265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13293658.

The product of its digits is 414720, while the sum is 43.

The square root of 66468265 is about 8152.8071852583. The cubic root of 66468265 is about 405.0774936811.

The spelling of 66468265 in words is "sixty-six million, four hundred sixty-eight thousand, two hundred sixty-five".