303972666 has 8 divisors (see below), whose sum is σ = 607945344. Its totient is φ = 101324220.

The previous prime is 303972653. The next prime is 303972671. The reversal of 303972666 is 666279303.

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

303972666 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25331050 + ... + 25331061.

It is an arithmetic number, because the mean of its divisors is an integer number (75993168).

Almost surely, 2^303972666 is an apocalyptic number.

303972666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

303972666 is a wasteful number, since it uses less digits than its factorization.

303972666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50662116.

The product of its (nonzero) digits is 244944, while the sum is 42.

The square root of 303972666 is about 17434.8119003332. The cubic root of 303972666 is about 672.3749280725.

The spelling of 303972666 in words is "three hundred three million, nine hundred seventy-two thousand, six hundred sixty-six".