66652230 has 16 divisors (see below), whose sum is σ = 159965424. Its totient is φ = 17773920.

The previous prime is 66652219. The next prime is 66652231. The reversal of 66652230 is 3225666.

It is a super-3 number, since 3×66652230³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 2221741 = 66652230 / (6 + 6 + 6 + 5 + 2 + 2 + 3 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66652231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1110841 + ... + 1110900.

It is an arithmetic number, because the mean of its divisors is an integer number (9997839).

Almost surely, 2^66652230 is an apocalyptic number.

66652230 is an abundant number, since it is smaller than the sum of its proper divisors (93313194).

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

66652230 is a wasteful number, since it uses less digits than its factorization.

66652230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2221751.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 66652230 is about 8164.0816997382. The cubic root of 66652230 is about 405.4508620176.

Adding to 66652230 its reverse (3225666), we get a palindrome (69877896).

The spelling of 66652230 in words is "sixty-six million, six hundred fifty-two thousand, two hundred thirty".