520678898 has 4 divisors (see below), whose sum is σ = 781018350. Its totient is φ = 260339448.

The previous prime is 520678897. The next prime is 520678901. The reversal of 520678898 is 898876025.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 418325209 + 102353689 = 20453^2 + 10117^2 .

It is a super-2 number, since 2×520678898² = 542213029644988808, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (520678891) 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, 130169723 + ... + 130169726.

Almost surely, 2^520678898 is an apocalyptic number.

520678898 is a deficient number, since it is larger than the sum of its proper divisors (260339452).

520678898 is a wasteful number, since it uses less digits than its factorization.

520678898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260339451.

The product of its (nonzero) digits is 1935360, while the sum is 53.

The square root of 520678898 is about 22818.3894698991. The cubic root of 520678898 is about 804.4949562835.

The spelling of 520678898 in words is "five hundred twenty million, six hundred seventy-eight thousand, eight hundred ninety-eight".