516856905 has 48 divisors (see below), whose sum is σ = 950040000. Its totient is φ = 259210368.

The previous prime is 516856877. The next prime is 516856919. The reversal of 516856905 is 509658615.

It is a happy number.

It is not a de Polignac number, because 516856905 - 2⁶ = 516856841 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 116671 + ... + 121019.

It is an arithmetic number, because the mean of its divisors is an integer number (19792500).

Almost surely, 2^516856905 is an apocalyptic number.

It is an amenable number.

516856905 is a deficient number, since it is larger than the sum of its proper divisors (433183095).

516856905 is a wasteful number, since it uses less digits than its factorization.

516856905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4518 (or 4515 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 45.

The square root of 516856905 is about 22734.4871285895. The cubic root of 516856905 is about 802.5216810749.

The spelling of 516856905 in words is "five hundred sixteen million, eight hundred fifty-six thousand, nine hundred five".