501660213 has 8 divisors (see below), whose sum is σ = 669139968. Its totient is φ = 334310304.

The previous prime is 501660149. The next prime is 501660253. The reversal of 501660213 is 312066105.

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

It is not a de Polignac number, because 501660213 - 2⁶ = 501660149 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501660253) 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, 23056 + ... + 39177.

It is an arithmetic number, because the mean of its divisors is an integer number (83642496).

Almost surely, 2^501660213 is an apocalyptic number.

It is an amenable number.

501660213 is a deficient number, since it is larger than the sum of its proper divisors (167479755).

501660213 is a wasteful number, since it uses less digits than its factorization.

501660213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64923.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 501660213 is about 22397.7725008537. The cubic root of 501660213 is about 794.5780300913.

The spelling of 501660213 in words is "five hundred one million, six hundred sixty thousand, two hundred thirteen".