516646533 has 8 divisors (see below), whose sum is σ = 741851488. Its totient is φ = 317936304.

The previous prime is 516646519. The next prime is 516646561. The reversal of 516646533 is 335646615.

It is a happy number.

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

It is not a de Polignac number, because 516646533 - 2¹² = 516642437 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 13247347 = 516646533 / (5 + 1 + 6 + 6 + 4 + 6 + 5 + 3 + 3).

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 516646491 and 516646500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516646583) 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, 6623635 + ... + 6623712.

It is an arithmetic number, because the mean of its divisors is an integer number (92731436).

Almost surely, 2^516646533 is an apocalyptic number.

It is an amenable number.

516646533 is a deficient number, since it is larger than the sum of its proper divisors (225204955).

516646533 is a wasteful number, since it uses less digits than its factorization.

516646533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13247363.

The product of its digits is 194400, while the sum is 39.

The square root of 516646533 is about 22729.8599423754. The cubic root of 516646533 is about 802.4127850406.

The spelling of 516646533 in words is "five hundred sixteen million, six hundred forty-six thousand, five hundred thirty-three".