66674111 has 16 divisors (see below), whose sum is σ = 78913536. Its totient is φ = 55139616.

The previous prime is 66674107. The next prime is 66674117. The reversal of 66674111 is 11147666.

It is a happy number.

It is not a de Polignac number, because 66674111 - 2² = 66674107 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 (66674117) 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, 31880 + ... + 33906.

It is an arithmetic number, because the mean of its divisors is an integer number (4932096).

Almost surely, 2^66674111 is an apocalyptic number.

66674111 is a deficient number, since it is larger than the sum of its proper divisors (12239425).

66674111 is a wasteful number, since it uses less digits than its factorization.

66674111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2198.

The product of its digits is 6048, while the sum is 32.

The square root of 66674111 is about 8165.4216670053. The cubic root of 66674111 is about 405.4952251228.

The spelling of 66674111 in words is "sixty-six million, six hundred seventy-four thousand, one hundred eleven".