520668841 has 16 divisors (see below), whose sum is σ = 653829120. Its totient is φ = 402788880.

The previous prime is 520668823. The next prime is 520668851. The reversal of 520668841 is 148866025.

It is a cyclic number.

It is not a de Polignac number, because 520668841 - 2⁷ = 520668713 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 520668794 and 520668803.

It is not an unprimeable number, because it can be changed into a prime (520668821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13621 + ... + 35026.

It is an arithmetic number, because the mean of its divisors is an integer number (40864320).

Almost surely, 2^520668841 is an apocalyptic number.

It is an amenable number.

520668841 is a deficient number, since it is larger than the sum of its proper divisors (133160279).

520668841 is a wasteful number, since it uses less digits than its factorization.

520668841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48804.

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 520668841 is about 22818.1690983304. The cubic root of 520668841 is about 804.4897765986.

It can be divided in two parts, 5206 and 68841, that added together give a palindrome (74047).

The spelling of 520668841 in words is "five hundred twenty million, six hundred sixty-eight thousand, eight hundred forty-one".