66844098 has 12 divisors (see below), whose sum is σ = 144828918. Its totient is φ = 22281360.

The previous prime is 66844093. The next prime is 66844103. The reversal of 66844098 is 89044866.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (66844093) and next prime (66844103).

It can be written as a sum of positive squares in only one way, i.e., 60326289 + 6517809 = 7767^2 + 2553^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66844093) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1856763 + ... + 1856798.

Almost surely, 2^66844098 is an apocalyptic number.

66844098 is an abundant number, since it is smaller than the sum of its proper divisors (77984820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66844098 is a wasteful number, since it uses less digits than its factorization.

66844098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3713569 (or 3713566 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The square root of 66844098 is about 8175.8239951702. The cubic root of 66844098 is about 405.8395387806.

The spelling of 66844098 in words is "sixty-six million, eight hundred forty-four thousand, ninety-eight".