516220709 has 8 divisors (see below), whose sum is σ = 556644480. Its totient is φ = 477122400.

The previous prime is 516220697. The next prime is 516220723. The reversal of 516220709 is 907022615.

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 516220709 - 2²⁸ = 247785253 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516220739) 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, 330557 + ... + 332114.

It is an arithmetic number, because the mean of its divisors is an integer number (69580560).

Almost surely, 2^516220709 is an apocalyptic number.

It is an amenable number.

516220709 is a deficient number, since it is larger than the sum of its proper divisors (40423771).

516220709 is a wasteful number, since it uses less digits than its factorization.

516220709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662731.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 516220709 is about 22720.4909498012. The cubic root of 516220709 is about 802.1922728745.

The spelling of 516220709 in words is "five hundred sixteen million, two hundred twenty thousand, seven hundred nine".