66289367 has 4 divisors (see below), whose sum is σ = 66315600. Its totient is φ = 66263136.

The previous prime is 66289343. The next prime is 66289369. The reversal of 66289367 is 76398266.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66289367 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 (66289369) 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, 8867 + ... + 14532.

It is an arithmetic number, because the mean of its divisors is an integer number (16578900).

Almost surely, 2^66289367 is an apocalyptic number.

66289367 is a deficient number, since it is larger than the sum of its proper divisors (26233).

66289367 is a wasteful number, since it uses less digits than its factorization.

66289367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26232.

The product of its digits is 653184, while the sum is 47.

The square root of 66289367 is about 8141.8282344938. The cubic root of 66289367 is about 404.7137478352.

The spelling of 66289367 in words is "sixty-six million, two hundred eighty-nine thousand, three hundred sixty-seven".