660501222 has 8 divisors (see below), whose sum is σ = 1321002456. Its totient is φ = 220167072.

The previous prime is 660501197. The next prime is 660501239. The reversal of 660501222 is 222105066.

It is a sphenic number, since it is the product of 3 distinct primes.

660501222 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 660501192 and 660501201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55041763 + ... + 55041774.

It is an arithmetic number, because the mean of its divisors is an integer number (165125307).

Almost surely, 2^660501222 is an apocalyptic number.

660501222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

660501222 is a wasteful number, since it uses less digits than its factorization.

660501222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110083542.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 660501222 is about 25700.2183259209. The cubic root of 660501222 is about 870.8791140196.

Adding to 660501222 its reverse (222105066), we get a palindrome (882606288).

The spelling of 660501222 in words is "six hundred sixty million, five hundred one thousand, two hundred twenty-two".