305665606 has 4 divisors (see below), whose sum is σ = 458498412. Its totient is φ = 152832802.

The previous prime is 305665601. The next prime is 305665609. The reversal of 305665606 is 606566503.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a zygodrome in base 5.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305665601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76416400 + ... + 76416403.

It is an arithmetic number, because the mean of its divisors is an integer number (114624603).

Almost surely, 2^305665606 is an apocalyptic number.

305665606 is a deficient number, since it is larger than the sum of its proper divisors (152832806).

305665606 is a wasteful number, since it uses less digits than its factorization.

305665606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152832805.

The product of its (nonzero) digits is 97200, while the sum is 37.

The square root of 305665606 is about 17483.2950555666. The cubic root of 305665606 is about 673.6208555966.

The spelling of 305665606 in words is "three hundred five million, six hundred sixty-five thousand, six hundred six".