501430666 has 8 divisors (see below), whose sum is σ = 820522944. Its totient is φ = 227923020.

The previous prime is 501430621. The next prime is 501430669. The reversal of 501430666 is 666034105.

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

It is not an unprimeable number, because it can be changed into a prime (501430669) 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, 11396130 + ... + 11396173.

It is an arithmetic number, because the mean of its divisors is an integer number (102565368).

Almost surely, 2^501430666 is an apocalyptic number.

501430666 is a deficient number, since it is larger than the sum of its proper divisors (319092278).

501430666 is a wasteful number, since it uses less digits than its factorization.

501430666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22792316.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 501430666 is about 22392.6475879919. The cubic root of 501430666 is about 794.4568186784.

The spelling of 501430666 in words is "five hundred one million, four hundred thirty thousand, six hundred sixty-six".