501660799 has 8 divisors (see below), whose sum is σ = 506854800. Its totient is φ = 496491456.

The previous prime is 501660721. The next prime is 501660827. The reversal of 501660799 is 997066105.

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

It is a cyclic number.

It is not a de Polignac number, because 501660799 - 2⁷ = 501660671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501760799) 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, 36219 + ... + 48115.

It is an arithmetic number, because the mean of its divisors is an integer number (63356850).

Almost surely, 2^501660799 is an apocalyptic number.

501660799 is a deficient number, since it is larger than the sum of its proper divisors (5194001).

501660799 is a wasteful number, since it uses less digits than its factorization.

501660799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12329.

The product of its (nonzero) digits is 102060, while the sum is 43.

The square root of 501660799 is about 22397.7855825079. The cubic root of 501660799 is about 794.5783394790.

The spelling of 501660799 in words is "five hundred one million, six hundred sixty thousand, seven hundred ninety-nine".