520634267 has 4 divisors (see below), whose sum is σ = 527967216. Its totient is φ = 513301320.

The previous prime is 520634263. The next prime is 520634269. The reversal of 520634267 is 762436025.

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

It is a cyclic number.

It is not a de Polignac number, because 520634267 - 2² = 520634263 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520634263) 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 in 3 ways as a sum of consecutive naturals, for example, 3666368 + ... + 3666509.

It is an arithmetic number, because the mean of its divisors is an integer number (131991804).

Almost surely, 2^520634267 is an apocalyptic number.

520634267 is a deficient number, since it is larger than the sum of its proper divisors (7332949).

520634267 is an equidigital number, since it uses as much as digits as its factorization.

520634267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7332948.

The product of its (nonzero) digits is 60480, while the sum is 35.

The square root of 520634267 is about 22817.4114877214. The cubic root of 520634267 is about 804.4719693457.

The spelling of 520634267 in words is "five hundred twenty million, six hundred thirty-four thousand, two hundred sixty-seven".