66283700 has 108 divisors (see below), whose sum is σ = 172801440. Its totient is φ = 21616320.

The previous prime is 66283699. The next prime is 66283709. The reversal of 66283700 is 738266.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66283709) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 370211 + ... + 370389.

Almost surely, 2^66283700 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66283700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86400720).

66283700 is an abundant number, since it is smaller than the sum of its proper divisors (106517740).

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

66283700 is a wasteful number, since it uses less digits than its factorization.

66283700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246 (or 216 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 66283700 is about 8141.4802093968. The cubic root of 66283700 is about 404.7022146724.

The spelling of 66283700 in words is "sixty-six million, two hundred eighty-three thousand, seven hundred".