66030887 has 4 divisors (see below), whose sum is σ = 71110200. Its totient is φ = 60951576.

The previous prime is 66030857. The next prime is 66030893. The reversal of 66030887 is 78803066.

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

It is a cyclic number.

It is not a de Polignac number, because 66030887 - 2⁶ = 66030823 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 66030887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66030827) 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, 2539637 + ... + 2539662.

It is an arithmetic number, because the mean of its divisors is an integer number (17777550).

Almost surely, 2^66030887 is an apocalyptic number.

66030887 is a deficient number, since it is larger than the sum of its proper divisors (5079313).

66030887 is a wasteful number, since it uses less digits than its factorization.

66030887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5079312.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 66030887 is about 8125.9391457234. The cubic root of 66030887 is about 404.1870335339.

The spelling of 66030887 in words is "sixty-six million, thirty thousand, eight hundred eighty-seven".