520107645 has 8 divisors (see below), whose sum is σ = 832172256. Its totient is φ = 277390736.

The previous prime is 520107619. The next prime is 520107659. The reversal of 520107645 is 546701025.

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

It is a cyclic number.

It is not a de Polignac number, because 520107645 - 2⁵ = 520107613 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17336907 + ... + 17336936.

It is an arithmetic number, because the mean of its divisors is an integer number (104021532).

Almost surely, 2^520107645 is an apocalyptic number.

It is an amenable number.

520107645 is a deficient number, since it is larger than the sum of its proper divisors (312064611).

520107645 is a wasteful number, since it uses less digits than its factorization.

520107645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34673851.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 520107645 is about 22805.8686526078. The cubic root of 520107645 is about 804.2006364822.

The spelling of 520107645 in words is "five hundred twenty million, one hundred seven thousand, six hundred forty-five".