516878663 has 8 divisors (see below), whose sum is σ = 592736928. Its totient is φ = 441525024.

The previous prime is 516878633. The next prime is 516878707. The reversal of 516878663 is 366878615.

It is a happy number.

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 516878663 - 2¹⁶ = 516813127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516878633) 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, 123956 + ... + 128057.

It is an arithmetic number, because the mean of its divisors is an integer number (74092116).

Almost surely, 2^516878663 is an apocalyptic number.

516878663 is a deficient number, since it is larger than the sum of its proper divisors (75858265).

516878663 is a wasteful number, since it uses less digits than its factorization.

516878663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252313.

The product of its digits is 1451520, while the sum is 50.

The square root of 516878663 is about 22734.9656476538. The cubic root of 516878663 is about 802.5329421039.

The spelling of 516878663 in words is "five hundred sixteen million, eight hundred seventy-eight thousand, six hundred sixty-three".