305055666 has 32 divisors (see below), whose sum is σ = 679320000. Its totient is φ = 101472480.

The previous prime is 305055661. The next prime is 305055677. The reversal of 305055666 is 666550503.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 305055666.

It is not an unprimeable number, because it can be changed into a prime (305055661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21286 + ... + 32606.

It is an arithmetic number, because the mean of its divisors is an integer number (21228750).

Almost surely, 2^305055666 is an apocalyptic number.

305055666 is an abundant number, since it is smaller than the sum of its proper divisors (374264334).

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

305055666 is a wasteful number, since it uses less digits than its factorization.

305055666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11831 (or 11825 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 36.

The square root of 305055666 is about 17465.8428368058. The cubic root of 305055666 is about 673.1724986462.

The spelling of 305055666 in words is "three hundred five million, fifty-five thousand, six hundred sixty-six".