305563066 has 8 divisors (see below), whose sum is σ = 485306100. Its totient is φ = 143794368.

The previous prime is 305563061. The next prime is 305563067. The reversal of 305563066 is 660365503.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 300017041 + 5546025 = 17321^2 + 2355^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 8987149 = 305563066 / (3 + 0 + 5 + 5 + 6 + 3 + 0 + 6 + 6).

It is not an unprimeable number, because it can be changed into a prime (305563061) 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, 4493541 + ... + 4493608.

Almost surely, 2^305563066 is an apocalyptic number.

305563066 is a deficient number, since it is larger than the sum of its proper divisors (179743034).

305563066 is a wasteful number, since it uses less digits than its factorization.

305563066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8987168.

The product of its (nonzero) digits is 48600, while the sum is 34.

The square root of 305563066 is about 17480.3622960166. The cubic root of 305563066 is about 673.5455218479.

The spelling of 305563066 in words is "three hundred five million, five hundred sixty-three thousand, sixty-six".