66289798 has 8 divisors (see below), whose sum is σ = 101064960. Its totient is φ = 32601480.

The previous prime is 66289793. The next prime is 66289801. The reversal of 66289798 is 89798266.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66289793) 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, 271558 + ... + 271801.

It is an arithmetic number, because the mean of its divisors is an integer number (12633120).

Almost surely, 2^66289798 is an apocalyptic number.

66289798 is a deficient number, since it is larger than the sum of its proper divisors (34775162).

66289798 is a wasteful number, since it uses less digits than its factorization.

66289798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543422.

The product of its digits is 2612736, while the sum is 55.

The square root of 66289798 is about 8141.8547027075. The cubic root of 66289798 is about 404.7146249555.

The spelling of 66289798 in words is "sixty-six million, two hundred eighty-nine thousand, seven hundred ninety-eight".