660228415 has 32 divisors (see below), whose sum is σ = 997608960. Its totient is φ = 407472000.

The previous prime is 660228391. The next prime is 660228419. The reversal of 660228415 is 514822066.

It is not a de Polignac number, because 660228415 - 2¹¹ = 660226367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660228419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30396 + ... + 47374.

It is an arithmetic number, because the mean of its divisors is an integer number (31175280).

Almost surely, 2^660228415 is an apocalyptic number.

660228415 is a deficient number, since it is larger than the sum of its proper divisors (337380545).

660228415 is a wasteful number, since it uses less digits than its factorization.

660228415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17103.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 660228415 is about 25694.9102936749. The cubic root of 660228415 is about 870.7591976957.

The spelling of 660228415 in words is "six hundred sixty million, two hundred twenty-eight thousand, four hundred fifteen".