66907283 has 4 divisors (see below), whose sum is σ = 67434240. Its totient is φ = 66380328.

The previous prime is 66907279. The next prime is 66907327. The reversal of 66907283 is 38270966.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38270966 = 2 ⋅19135483.

It is a cyclic number.

It is not a de Polignac number, because 66907283 - 2² = 66907279 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66907283.

It is not an unprimeable number, because it can be changed into a prime (66907583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263288 + ... + 263541.

It is an arithmetic number, because the mean of its divisors is an integer number (16858560).

Almost surely, 2^66907283 is an apocalyptic number.

66907283 is a deficient number, since it is larger than the sum of its proper divisors (526957).

66907283 is a wasteful number, since it uses less digits than its factorization.

66907283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526956.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 66907283 is about 8179.6872189589. The cubic root of 66907283 is about 405.9673730323.

The spelling of 66907283 in words is "sixty-six million, nine hundred seven thousand, two hundred eighty-three".