305206664 has 16 divisors (see below), whose sum is σ = 654014400. Its totient is φ = 130802832.

The previous prime is 305206663. The next prime is 305206667. The reversal of 305206664 is 466602503.

It is a super-2 number, since 2×305206664² = 186302215500017792, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 305206664.

It is not an unprimeable number, because it can be changed into a prime (305206663) 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, 2725004 + ... + 2725115.

It is an arithmetic number, because the mean of its divisors is an integer number (40875900).

Almost surely, 2^305206664 is an apocalyptic number.

It is an amenable number.

305206664 is an abundant number, since it is smaller than the sum of its proper divisors (348807736).

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

305206664 is a wasteful number, since it uses less digits than its factorization.

305206664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5450132 (or 5450128 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 305206664 is about 17470.1649677386. The cubic root of 305206664 is about 673.2835504372.

The spelling of 305206664 in words is "three hundred five million, two hundred six thousand, six hundred sixty-four".