3421875 has 28 divisors (see below), whose sum is σ = 5781176. Its totient is φ = 1800000.

The previous prime is 3421867. The next prime is 3421877. The reversal of 3421875 is 5781243.

It is not a de Polignac number, because 3421875 - 2³ = 3421867 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3421877) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 46839 + ... + 46911.

Almost surely, 2^3421875 is an apocalyptic number.

3421875 is a deficient number, since it is larger than the sum of its proper divisors (2359301).

3421875 is an frugal number, since it uses more digits than its factorization.

3421875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106 (or 81 counting only the distinct ones).

The product of its digits is 6720, while the sum is 30.

The square root of 3421875 is about 1849.8310733686. The cubic root of 3421875 is about 150.6912540037.

It can be divided in two parts, 3 and 421875, that multiplied together give a square (1265625 = 1125²).

The spelling of 3421875 in words is "three million, four hundred twenty-one thousand, eight hundred seventy-five".