3420855 has 24 divisors (see below), whose sum is σ = 6243120. Its totient is φ = 1728000.

The previous prime is 3420839. The next prime is 3420871. The reversal of 3420855 is 5580243.

It is an interprime number because it is at equal distance from previous prime (3420839) and next prime (3420871).

It is not a de Polignac number, because 3420855 - 2⁴ = 3420839 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1146 + ... + 2855.

It is an arithmetic number, because the mean of its divisors is an integer number (260130).

Almost surely, 2^3420855 is an apocalyptic number.

3420855 is a deficient number, since it is larger than the sum of its proper divisors (2822265).

3420855 is a wasteful number, since it uses less digits than its factorization.

3420855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4031 (or 4028 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 3420855 is about 1849.5553519698. Note that the first 3 decimals coincide. The cubic root of 3420855 is about 150.6762797227.

It can be divided in two parts, 3420 and 855, that multiplied together give a square (2924100 = 1710²).

The spelling of 3420855 in words is "three million, four hundred twenty thousand, eight hundred fifty-five".