3509475685 has 16 divisors (see below), whose sum is σ = 4280781312. Its totient is φ = 2761494400.

The previous prime is 3509475653. The next prime is 3509475689. The reversal of 3509475685 is 5865749053.

3509475685 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3509475685 - 2⁵ = 3509475653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3509475689) 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, 141537 + ... + 164473.

It is an arithmetic number, because the mean of its divisors is an integer number (267548832).

Almost surely, 2^3509475685 is an apocalyptic number.

It is an amenable number.

3509475685 is a deficient number, since it is larger than the sum of its proper divisors (771305627).

3509475685 is a wasteful number, since it uses less digits than its factorization.

3509475685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23444.

The product of its (nonzero) digits is 4536000, while the sum is 52.

The square root of 3509475685 is about 59240.8278554579. The cubic root of 3509475685 is about 1519.6634303563.

The spelling of 3509475685 in words is "three billion, five hundred nine million, four hundred seventy-five thousand, six hundred eighty-five".