66652300 has 144 divisors (see below), whose sum is σ = 174988800. Its totient is φ = 21715200.

The previous prime is 66652273. The next prime is 66652303. The reversal of 66652300 is 325666.

It is not an unprimeable number, because it can be changed into a prime (66652303) 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, 843661 + ... + 843739.

It is an arithmetic number, because the mean of its divisors is an integer number (1215200).

Almost surely, 2^66652300 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 66652300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87494400).

66652300 is an abundant number, since it is smaller than the sum of its proper divisors (108336500).

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

66652300 is a wasteful number, since it uses less digits than its factorization.

66652300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176 (or 169 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 66652300 is about 8164.0859868083. The cubic root of 66652300 is about 405.4510039561.

Adding to 66652300 its reverse (325666), we get a palindrome (66977966).

The spelling of 66652300 in words is "sixty-six million, six hundred fifty-two thousand, three hundred".