66109302 has 96 divisors (see below), whose sum is σ = 171085824. Its totient is φ = 18057600.

The previous prime is 66109301. The next prime is 66109313. The reversal of 66109302 is 20390166.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66109301) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 346027 + ... + 346217.

It is an arithmetic number, because the mean of its divisors is an integer number (1782144).

Almost surely, 2^66109302 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66109302, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85542912).

66109302 is an abundant number, since it is smaller than the sum of its proper divisors (104976522).

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

66109302 is a wasteful number, since it uses less digits than its factorization.

66109302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314 (or 311 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 66109302 is about 8130.7626948522. The cubic root of 66109302 is about 404.3469677190.

Adding to 66109302 its reverse (20390166), we get a palindrome (86499468).

The spelling of 66109302 in words is "sixty-six million, one hundred nine thousand, three hundred two".