660343028 has 12 divisors (see below), whose sum is σ = 1192877952. Its totient is φ = 319520760.

The previous prime is 660343027. The next prime is 660343109. The reversal of 660343028 is 820343066.

It is a junction number, because it is equal to n+sod(n) for n = 660342985 and 660343003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660343027) 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, 2662550 + ... + 2662797.

It is an arithmetic number, because the mean of its divisors is an integer number (99406496).

Almost surely, 2^660343028 is an apocalyptic number.

It is an amenable number.

660343028 is a deficient number, since it is larger than the sum of its proper divisors (532534924).

660343028 is a wasteful number, since it uses less digits than its factorization.

660343028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5325382 (or 5325380 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 660343028 is about 25697.1404634835. The cubic root of 660343028 is about 870.8095815463.

The spelling of 660343028 in words is "six hundred sixty million, three hundred forty-three thousand, twenty-eight".