660827228 has 12 divisors (see below), whose sum is σ = 1165554432. Its totient is φ = 327811680.

The previous prime is 660827227. The next prime is 660827257. The reversal of 660827228 is 822728066.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660827227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 649913 + ... + 650928.

It is an arithmetic number, because the mean of its divisors is an integer number (97129536).

Almost surely, 2^660827228 is an apocalyptic number.

It is an amenable number.

660827228 is a deficient number, since it is larger than the sum of its proper divisors (504727204).

660827228 is a wasteful number, since it uses less digits than its factorization.

660827228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1300972 (or 1300970 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 41.

The square root of 660827228 is about 25706.5600187968. The cubic root of 660827228 is about 871.0223714476.

The spelling of 660827228 in words is "six hundred sixty million, eight hundred twenty-seven thousand, two hundred twenty-eight".