3506404 has 12 divisors (see below), whose sum is σ = 6694128. Its totient is φ = 1593800.

The previous prime is 3506401. The next prime is 3506407. The reversal of 3506404 is 4046053.

It is an interprime number because it is at equal distance from previous prime (3506401) and next prime (3506407).

It is a super-3 number, since 3×3506404³ (a number of 21 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (3506401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39802 + ... + 39889.

It is an arithmetic number, because the mean of its divisors is an integer number (557844).

Almost surely, 2^3506404 is an apocalyptic number.

It is an amenable number.

3506404 is a deficient number, since it is larger than the sum of its proper divisors (3187724).

3506404 is a wasteful number, since it uses less digits than its factorization.

3506404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79706 (or 79704 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 3506404 is about 1872.5394521879. The cubic root of 3506404 is about 151.9219936767.

The spelling of 3506404 in words is "three million, five hundred six thousand, four hundred four".