66047151 has 4 divisors (see below), whose sum is σ = 88062872. Its totient is φ = 44031432.

The previous prime is 66047147. The next prime is 66047153. The reversal of 66047151 is 15174066.

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

It is not a de Polignac number, because 66047151 - 2² = 66047147 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 (66047153) 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 3 ways as a sum of consecutive naturals, for example, 11007856 + ... + 11007861.

It is an arithmetic number, because the mean of its divisors is an integer number (22015718).

Almost surely, 2^66047151 is an apocalyptic number.

66047151 is a deficient number, since it is larger than the sum of its proper divisors (22015721).

66047151 is a wasteful number, since it uses less digits than its factorization.

66047151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22015720.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 66047151 is about 8126.9398299729. The cubic root of 66047151 is about 404.2202157742.

The spelling of 66047151 in words is "sixty-six million, forty-seven thousand, one hundred fifty-one".