3420185 has 4 divisors (see below), whose sum is σ = 4104228. Its totient is φ = 2736144.

The previous prime is 3420161. The next prime is 3420187. The reversal of 3420185 is 5810243.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1948816 + 1471369 = 1396^2 + 1213^2 .

It is a cyclic number.

It is not a de Polignac number, because 3420185 - 2⁶ = 3420121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3420185.

It is not an unprimeable number, because it can be changed into a prime (3420187) 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, 342014 + ... + 342023.

It is an arithmetic number, because the mean of its divisors is an integer number (1026057).

Almost surely, 2^3420185 is an apocalyptic number.

It is an amenable number.

3420185 is a deficient number, since it is larger than the sum of its proper divisors (684043).

3420185 is an equidigital number, since it uses as much as digits as its factorization.

3420185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684042.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 3420185 is about 1849.3742184858. The cubic root of 3420185 is about 150.6664420555. Note that the first 3 decimals are identical.

The spelling of 3420185 in words is "three million, four hundred twenty thousand, one hundred eighty-five".