305740666 has 32 divisors (see below), whose sum is σ = 601873920. Its totient is φ = 112849200.

The previous prime is 305740637. The next prime is 305740667. The reversal of 305740666 is 666047503.

It is a super-2 number, since 2×305740666² = 186954709692247112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (305740667) 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, 49320 + ... + 55171.

It is an arithmetic number, because the mean of its divisors is an integer number (18808560).

Almost surely, 2^305740666 is an apocalyptic number.

305740666 is a deficient number, since it is larger than the sum of its proper divisors (296133254).

305740666 is a wasteful number, since it uses less digits than its factorization.

305740666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104530.

The product of its (nonzero) digits is 90720, while the sum is 37.

The square root of 305740666 is about 17485.4415443248. The cubic root of 305740666 is about 673.6759897501.

The spelling of 305740666 in words is "three hundred five million, seven hundred forty thousand, six hundred sixty-six".