513666898 has 8 divisors (see below), whose sum is σ = 770710140. Its totient is φ = 256763520.

The previous prime is 513666847. The next prime is 513666913. The reversal of 513666898 is 898666315.

It can be written as a sum of positive squares in 2 ways, for example, as 509269489 + 4397409 = 22567^2 + 2097^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25243 + ... + 40798.

Almost surely, 2^513666898 is an apocalyptic number.

513666898 is a deficient number, since it is larger than the sum of its proper divisors (257043242).

513666898 is a wasteful number, since it uses less digits than its factorization.

513666898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69932.

The product of its digits is 1866240, while the sum is 52.

The square root of 513666898 is about 22664.2206572386. The cubic root of 513666898 is about 800.8672355800.

The spelling of 513666898 in words is "five hundred thirteen million, six hundred sixty-six thousand, eight hundred ninety-eight".