3520368685 has 8 divisors (see below), whose sum is σ = 4226267160. Its totient is φ = 2815078464.

The previous prime is 3520368673. The next prime is 3520368689. The reversal of 3520368685 is 5868630253.

It can be written as a sum of positive squares in 4 ways, for example, as 73856836 + 3446511849 = 8594^2 + 58707^2 .

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 3520368685 - 2²³ = 3511980077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3520368689) 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, 139230 + ... + 162559.

It is an arithmetic number, because the mean of its divisors is an integer number (528283395).

Almost surely, 2^3520368685 is an apocalyptic number.

It is an amenable number.

3520368685 is a deficient number, since it is larger than the sum of its proper divisors (705898475).

3520368685 is a wasteful number, since it uses less digits than its factorization.

3520368685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304127.

The product of its (nonzero) digits is 1036800, while the sum is 46.

The square root of 3520368685 is about 59332.6949076140. The cubic root of 3520368685 is about 1521.2340919780.

The spelling of 3520368685 in words is "three billion, five hundred twenty million, three hundred sixty-eight thousand, six hundred eighty-five".