66100230 has 96 divisors (see below), whose sum is σ = 197683200. Its totient is φ = 15011136.

The previous prime is 66100207. The next prime is 66100261. The reversal of 66100230 is 3200166.

It is a happy number.

66100230 is a `hidden beast` number, since 661 + 0 + 0 + 2 + 3 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 150351 + ... + 150789.

It is an arithmetic number, because the mean of its divisors is an integer number (2059200).

Almost surely, 2^66100230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66100230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98841600).

66100230 is an abundant number, since it is smaller than the sum of its proper divisors (131582970).

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

66100230 is a wasteful number, since it uses less digits than its factorization.

66100230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698 (or 695 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 66100230 is about 8130.2047944686. The cubic root of 66100230 is about 404.3284710608.

Adding to 66100230 its reverse (3200166), we get a palindrome (69300396).

The spelling of 66100230 in words is "sixty-six million, one hundred thousand, two hundred thirty".