516766388 has 6 divisors (see below), whose sum is σ = 904341186. Its totient is φ = 258383192.

The previous prime is 516766387. The next prime is 516766409. The reversal of 516766388 is 883667615.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 360316324 + 156450064 = 18982^2 + 12508^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516766381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64595795 + ... + 64595802.

It is an arithmetic number, because the mean of its divisors is an integer number (150723531).

Almost surely, 2^516766388 is an apocalyptic number.

It is an amenable number.

516766388 is a deficient number, since it is larger than the sum of its proper divisors (387574798).

516766388 is a wasteful number, since it uses less digits than its factorization.

516766388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129191601 (or 129191599 counting only the distinct ones).

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

The square root of 516766388 is about 22732.4962993508. The cubic root of 516766388 is about 802.4748298767.

The spelling of 516766388 in words is "five hundred sixteen million, seven hundred sixty-six thousand, three hundred eighty-eight".