66900111 has 8 divisors (see below), whose sum is σ = 89245440. Its totient is φ = 44577432.

The previous prime is 66900109. The next prime is 66900133. The reversal of 66900111 is 11100966.

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

It is not a de Polignac number, because 66900111 - 2¹ = 66900109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66900101) 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, 3226 + ... + 12008.

It is an arithmetic number, because the mean of its divisors is an integer number (11155680).

Almost surely, 2^66900111 is an apocalyptic number.

66900111 is a deficient number, since it is larger than the sum of its proper divisors (22345329).

66900111 is a wasteful number, since it uses less digits than its factorization.

66900111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11325.

The product of its (nonzero) digits is 324, while the sum is 24.

The square root of 66900111 is about 8179.2488041384. The cubic root of 66900111 is about 405.9528668784.

The spelling of 66900111 in words is "sixty-six million, nine hundred thousand, one hundred eleven".