516749 has 8 divisors (see below), whose sum is σ = 554040. Its totient is φ = 480256.

The previous prime is 516727. The next prime is 516757. The reversal of 516749 is 947615.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1225 + 515524 = 35^2 + 718^2 .

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 516749 - 2⁸ = 516493 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 (516709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1787 + ... + 2055.

It is an arithmetic number, because the mean of its divisors is an integer number (69255).

2⁵¹⁶⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

516749 is a deficient number, since it is larger than the sum of its proper divisors (37291).

516749 is a wasteful number, since it uses less digits than its factorization.

516749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399.

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

The square root of 516749 is about 718.8525579004. The cubic root of 516749 is about 80.2465829298.

The spelling of 516749 in words is "five hundred sixteen thousand, seven hundred forty-nine".