506646868 has 36 divisors (see below), whose sum is σ = 1110731412. Its totient is φ = 200430720.

The previous prime is 506646863. The next prime is 506646923. The reversal of 506646868 is 868646605.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 118635664 + 388011204 = 10892^2 + 19698^2 .

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506646863) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 96873 + ... + 101968.

Almost surely, 2^506646868 is an apocalyptic number.

It is an amenable number.

506646868 is an abundant number, since it is smaller than the sum of its proper divisors (604084544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

506646868 is a wasteful number, since it uses less digits than its factorization.

506646868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198872 (or 198863 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 49.

The square root of 506646868 is about 22508.8175611248. The cubic root of 506646868 is about 797.2021367756.

The spelling of 506646868 in words is "five hundred six million, six hundred forty-six thousand, eight hundred sixty-eight".