66272911 has 4 divisors (see below), whose sum is σ = 66892392. Its totient is φ = 65653432.

The previous prime is 66272909. The next prime is 66272929. The reversal of 66272911 is 11927266.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66272911 - 2¹ = 66272909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66272951) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 309580 + ... + 309793.

It is an arithmetic number, because the mean of its divisors is an integer number (16723098).

Almost surely, 2^66272911 is an apocalyptic number.

66272911 is a deficient number, since it is larger than the sum of its proper divisors (619481).

66272911 is a wasteful number, since it uses less digits than its factorization.

66272911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619480.

The product of its digits is 9072, while the sum is 34.

The square root of 66272911 is about 8140.8175879330. The cubic root of 66272911 is about 404.6802556834.

The spelling of 66272911 in words is "sixty-six million, two hundred seventy-two thousand, nine hundred eleven".