66666283 has 8 divisors (see below), whose sum is σ = 68659200. Its totient is φ = 64702248.

The previous prime is 66666277. The next prime is 66666289. The reversal of 66666283 is 38266666.

It is an interprime number because it is at equal distance from previous prime (66666277) and next prime (66666289).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66666283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66666289) 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, 2491 + ... + 11812.

It is an arithmetic number, because the mean of its divisors is an integer number (8582400).

Almost surely, 2^66666283 is an apocalyptic number.

66666283 is a deficient number, since it is larger than the sum of its proper divisors (1992917).

66666283 is a wasteful number, since it uses less digits than its factorization.

66666283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14441.

The product of its digits is 373248, while the sum is 43.

The square root of 66666283 is about 8164.9423145543. The cubic root of 66666283 is about 405.4793551907.

The spelling of 66666283 in words is "sixty-six million, six hundred sixty-six thousand, two hundred eighty-three".