520678899 has 48 divisors (see below), whose sum is σ = 850624320. Its totient is φ = 304508160.

The previous prime is 520678897. The next prime is 520678901. The reversal of 520678899 is 998876025.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (520678897) and next prime (520678901).

It is not a de Polignac number, because 520678899 - 2¹ = 520678897 is a prime.

It is a super-2 number, since 2×520678899² = 542213031727704402, 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 polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 486537 + ... + 487605.

It is an arithmetic number, because the mean of its divisors is an integer number (17721340).

Almost surely, 2^520678899 is an apocalyptic number.

520678899 is a deficient number, since it is larger than the sum of its proper divisors (329945421).

520678899 is a wasteful number, since it uses less digits than its factorization.

520678899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1292 (or 1289 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The square root of 520678899 is about 22818.3894918112. The cubic root of 520678899 is about 804.4949567985.

The spelling of 520678899 in words is "five hundred twenty million, six hundred seventy-eight thousand, eight hundred ninety-nine".