660349356 has 24 divisors (see below), whose sum is σ = 1547609280. Its totient is φ = 219145872.

The previous prime is 660349331. The next prime is 660349363. The reversal of 660349356 is 653943066.

It is a super-2 number, since 2×660349356² = 872122543939229472, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118486 + ... + 123933.

It is an arithmetic number, because the mean of its divisors is an integer number (64483720).

Almost surely, 2^660349356 is an apocalyptic number.

It is an amenable number.

660349356 is an abundant number, since it is smaller than the sum of its proper divisors (887259924).

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

660349356 is a wasteful number, since it uses less digits than its factorization.

660349356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242653 (or 242651 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 42.

The square root of 660349356 is about 25697.2635897288. The cubic root of 660349356 is about 870.8123631640.

The spelling of 660349356 in words is "six hundred sixty million, three hundred forty-nine thousand, three hundred fifty-six".