66300987 has 8 divisors (see below), whose sum is σ = 89520640. Its totient is φ = 43641000.

The previous prime is 66300979. The next prime is 66300991. The reversal of 66300987 is 78900366.

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

It is not a de Polignac number, because 66300987 - 2³ = 66300979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66300947) 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 7 ways as a sum of consecutive naturals, for example, 139639 + ... + 140112.

It is an arithmetic number, because the mean of its divisors is an integer number (11190080).

Almost surely, 2^66300987 is an apocalyptic number.

66300987 is a deficient number, since it is larger than the sum of its proper divisors (23219653).

66300987 is a wasteful number, since it uses less digits than its factorization.

66300987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279833.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 66300987 is about 8142.5418021647. The cubic root of 66300987 is about 404.7373941564.

The spelling of 66300987 in words is "sixty-six million, three hundred thousand, nine hundred eighty-seven".