500412661 has 24 divisors (see below), whose sum is σ = 597018240. Its totient is φ = 410846016.

The previous prime is 500412643. The next prime is 500412683. The reversal of 500412661 is 166214005.

500412661 = T₆₈₉₃ + T₆₈₉₄ + ... + T₆₉₁₃.

It is not a de Polignac number, because 500412661 - 2²³ = 492024053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (500412631) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 982875 + ... + 983383.

It is an arithmetic number, because the mean of its divisors is an integer number (24875760).

Almost surely, 2^500412661 is an apocalyptic number.

It is an amenable number.

500412661 is a deficient number, since it is larger than the sum of its proper divisors (96605579).

500412661 is a wasteful number, since it uses less digits than its factorization.

500412661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741 (or 712 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 500412661 is about 22369.9052523698. The cubic root of 500412661 is about 793.9188187763.

Adding to 500412661 its reverse (166214005), we get a palindrome (666626666).

The spelling of 500412661 in words is "five hundred million, four hundred twelve thousand, six hundred sixty-one".