66887203 has 4 divisors (see below), whose sum is σ = 66935440. Its totient is φ = 66838968.

The previous prime is 66887189. The next prime is 66887207. The reversal of 66887203 is 30278866.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30278866 = 2 ⋅15139433.

It is a cyclic number.

It is not a de Polignac number, because 66887203 - 2¹³ = 66879011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66887207) 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, 21975 + ... + 24832.

It is an arithmetic number, because the mean of its divisors is an integer number (16733860).

Almost surely, 2^66887203 is an apocalyptic number.

66887203 is a deficient number, since it is larger than the sum of its proper divisors (48237).

66887203 is a wasteful number, since it uses less digits than its factorization.

66887203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48236.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 66887203 is about 8178.4596960552. The cubic root of 66887203 is about 405.9267564251.

The spelling of 66887203 in words is "sixty-six million, eight hundred eighty-seven thousand, two hundred three".