500987785 has 8 divisors (see below), whose sum is σ = 605015496. Its totient is φ = 398236800.

The previous prime is 500987783. The next prime is 500987791. The reversal of 500987785 is 587789005.

It can be written as a sum of positive squares in 4 ways, for example, as 24176889 + 476810896 = 4917^2 + 21836^2 .

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

It is not a de Polignac number, because 500987785 - 2¹ = 500987783 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (500987783) 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, 318316 + ... + 319885.

It is an arithmetic number, because the mean of its divisors is an integer number (75626937).

Almost surely, 2^500987785 is an apocalyptic number.

It is an amenable number.

500987785 is a deficient number, since it is larger than the sum of its proper divisors (104027711).

500987785 is a wasteful number, since it uses less digits than its factorization.

500987785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638363.

The product of its (nonzero) digits is 705600, while the sum is 49.

The square root of 500987785 is about 22382.7564209594. The cubic root of 500987785 is about 794.2228524868. Note that the first 3 decimals are identical.

The spelling of 500987785 in words is "five hundred million, nine hundred eighty-seven thousand, seven hundred eighty-five".