66387151 has 8 divisors (see below), whose sum is σ = 69553664. Its totient is φ = 63284760.

The previous prime is 66387143. The next prime is 66387163. The reversal of 66387151 is 15178366.

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

It is a cyclic number.

It is not a de Polignac number, because 66387151 - 2³ = 66387143 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 66387151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66387551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13905 + ... + 18058.

It is an arithmetic number, because the mean of its divisors is an integer number (8694208).

Almost surely, 2^66387151 is an apocalyptic number.

66387151 is a deficient number, since it is larger than the sum of its proper divisors (3166513).

66387151 is a wasteful number, since it uses less digits than its factorization.

66387151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32061.

The product of its digits is 30240, while the sum is 37.

The square root of 66387151 is about 8147.8310610861. The cubic root of 66387151 is about 404.9126489457.

The spelling of 66387151 in words is "sixty-six million, three hundred eighty-seven thousand, one hundred fifty-one".