66098143 has 4 divisors (see below), whose sum is σ = 66115768. Its totient is φ = 66080520.

The previous prime is 66098111. The next prime is 66098147. The reversal of 66098143 is 34189066.

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 66098143 - 2⁵ = 66098111 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 (66098147) 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, 693 + ... + 11518.

It is an arithmetic number, because the mean of its divisors is an integer number (16528942).

Almost surely, 2^66098143 is an apocalyptic number.

66098143 is a deficient number, since it is larger than the sum of its proper divisors (17625).

66098143 is a wasteful number, since it uses less digits than its factorization.

66098143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17624.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 66098143 is about 8130.0764449051. The cubic root of 66098143 is about 404.3242156928.

The spelling of 66098143 in words is "sixty-six million, ninety-eight thousand, one hundred forty-three".