3509705 has 8 divisors (see below), whose sum is σ = 4234632. Its totient is φ = 2792448.

The previous prime is 3509689. The next prime is 3509711. The reversal of 3509705 is 5079053.

It can be written as a sum of positive squares in 4 ways, for example, as 53824 + 3455881 = 232^2 + 1859^2 .

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 3509705 - 2⁴ = 3509689 is a prime.

It is a Duffinian 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, 854 + ... + 2783.

It is an arithmetic number, because the mean of its divisors is an integer number (529329).

Almost surely, 2^3509705 is an apocalyptic number.

It is an amenable number.

3509705 is a deficient number, since it is larger than the sum of its proper divisors (724927).

3509705 is a wasteful number, since it uses less digits than its factorization.

3509705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3835.

The product of its (nonzero) digits is 4725, while the sum is 29.

The square root of 3509705 is about 1873.4206681896. The cubic root of 3509705 is about 151.9696528751.

The spelling of 3509705 in words is "three million, five hundred nine thousand, seven hundred five".