66960111 has 8 divisors (see below), whose sum is σ = 89447344. Its totient is φ = 44556480.

The previous prime is 66960109. The next prime is 66960119. The reversal of 66960111 is 11106966.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66960111 - 2¹ = 66960109 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 (66960119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19006 + ... + 22251.

It is an arithmetic number, because the mean of its divisors is an integer number (11180918).

Almost surely, 2^66960111 is an apocalyptic number.

66960111 is a deficient number, since it is larger than the sum of its proper divisors (22487233).

66960111 is a wasteful number, since it uses less digits than its factorization.

66960111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41801.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 66960111 is about 8182.9158006178. The cubic root of 66960111 is about 406.0741915101.

The spelling of 66960111 in words is "sixty-six million, nine hundred sixty thousand, one hundred eleven".