516428705 has 8 divisors (see below), whose sum is σ = 667384872. Its totient is φ = 381362688.

The previous prime is 516428687. The next prime is 516428747. The reversal of 516428705 is 507824615.

It can be written as a sum of positive squares in 4 ways, for example, as 8196769 + 508231936 = 2863^2 + 22544^2 .

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 516428705 - 2¹⁸ = 516166561 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3972464 + ... + 3972593.

It is an arithmetic number, because the mean of its divisors is an integer number (83423109).

Almost surely, 2^516428705 is an apocalyptic number.

It is an amenable number.

516428705 is a deficient number, since it is larger than the sum of its proper divisors (150956167).

516428705 is a wasteful number, since it uses less digits than its factorization.

516428705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7945075.

The product of its (nonzero) digits is 67200, while the sum is 38.

The square root of 516428705 is about 22725.0677666756. The cubic root of 516428705 is about 802.2999983600.

The spelling of 516428705 in words is "five hundred sixteen million, four hundred twenty-eight thousand, seven hundred five".