3405506 has 8 divisors (see below), whose sum is σ = 5501244. Its totient is φ = 1571760.

The previous prime is 3405473. The next prime is 3405509. The reversal of 3405506 is 6055043.

It can be written as a sum of positive squares in 2 ways, for example, as 2531281 + 874225 = 1591^2 + 935^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×3405506² = 23194942232072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3405509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65465 + ... + 65516.

Almost surely, 2^3405506 is an apocalyptic number.

3405506 is a deficient number, since it is larger than the sum of its proper divisors (2095738).

3405506 is a wasteful number, since it uses less digits than its factorization.

3405506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130996.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 3405506 is about 1845.4013113683. The cubic root of 3405506 is about 150.4505858680.

The spelling of 3405506 in words is "three million, four hundred five thousand, five hundred six".