306491066 has 16 divisors (see below), whose sum is σ = 526029504. Its totient is φ = 131199264.

The previous prime is 306491051. The next prime is 306491069. The reversal of 306491066 is 660194603.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (306491069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35 + ... + 24758.

It is an arithmetic number, because the mean of its divisors is an integer number (32876844).

Almost surely, 2^306491066 is an apocalyptic number.

306491066 is a deficient number, since it is larger than the sum of its proper divisors (219538438).

306491066 is a wasteful number, since it uses less digits than its factorization.

306491066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25685.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 306491066 is about 17506.8862451322. The cubic root of 306491066 is about 674.2266889747.

The spelling of 306491066 in words is "three hundred six million, four hundred ninety-one thousand, sixty-six".