66302887 has 4 divisors (see below), whose sum is σ = 75774736. Its totient is φ = 56831040.

The previous prime is 66302881. The next prime is 66302909. The reversal of 66302887 is 78820366.

It is a happy number.

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

It is not a de Polignac number, because 66302887 - 2¹⁹ = 65778599 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 (66302881) 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, 4735914 + ... + 4735927.

It is an arithmetic number, because the mean of its divisors is an integer number (18943684).

Almost surely, 2^66302887 is an apocalyptic number.

66302887 is a deficient number, since it is larger than the sum of its proper divisors (9471849).

66302887 is an equidigital number, since it uses as much as digits as its factorization.

66302887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9471848.

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

The square root of 66302887 is about 8142.6584725138. The cubic root of 66302887 is about 404.7412603316.

The spelling of 66302887 in words is "sixty-six million, three hundred two thousand, eight hundred eighty-seven".