520380787 has 8 divisors (see below), whose sum is σ = 539115392. Its totient is φ = 501768000.

The previous prime is 520380779. The next prime is 520380799. The reversal of 520380787 is 787083025.

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 520380787 - 2³ = 520380779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520380587) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21714 + ... + 38887.

It is an arithmetic number, because the mean of its divisors is an integer number (67389424).

Almost surely, 2^520380787 is an apocalyptic number.

520380787 is a deficient number, since it is larger than the sum of its proper divisors (18734605).

520380787 is a wasteful number, since it uses less digits than its factorization.

520380787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60909.

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 520380787 is about 22811.8562813288. The cubic root of 520380787 is about 804.3413910170.

The spelling of 520380787 in words is "five hundred twenty million, three hundred eighty thousand, seven hundred eighty-seven".