506646653 has 8 divisors (see below), whose sum is σ = 509218680. Its totient is φ = 504080640.

The previous prime is 506646649. The next prime is 506646667. The reversal of 506646653 is 356646605.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3003289 + 503643364 = 1733^2 + 22442^2 .

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 506646653 - 2² = 506646649 is a prime.

It is a super-2 number, since 2×506646653² = 513381661992204818, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 506646653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506646853) 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, 316451 + ... + 318047.

It is an arithmetic number, because the mean of its divisors is an integer number (63652335).

Almost surely, 2^506646653 is an apocalyptic number.

It is an amenable number.

506646653 is a deficient number, since it is larger than the sum of its proper divisors (2572027).

506646653 is a wasteful number, since it uses less digits than its factorization.

506646653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3007.

The product of its (nonzero) digits is 388800, while the sum is 41.

The square root of 506646653 is about 22508.8127852181. The cubic root of 506646653 is about 797.2020240090.

The spelling of 506646653 in words is "five hundred six million, six hundred forty-six thousand, six hundred fifty-three".