3675421 has 4 divisors (see below), whose sum is σ = 3683232. Its totient is φ = 3667612.

The previous prime is 3675403. The next prime is 3675439. The reversal of 3675421 is 1245763.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (3675403) and next prime (3675439).

It is a cyclic number.

It is not a de Polignac number, because 3675421 - 2¹⁹ = 3151133 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3675421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3675401) 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, 3151 + ... + 4156.

It is an arithmetic number, because the mean of its divisors is an integer number (920808).

Almost surely, 2^3675421 is an apocalyptic number.

It is an amenable number.

3675421 is a deficient number, since it is larger than the sum of its proper divisors (7811).

3675421 is an equidigital number, since it uses as much as digits as its factorization.

3675421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7810.

The product of its digits is 5040, while the sum is 28.

The square root of 3675421 is about 1917.1387534553. The cubic root of 3675421 is about 154.3247909953.

It can be divided in two parts, 3675 and 421, that added together give a 12-th power (4096 = 2¹²).

The spelling of 3675421 in words is "three million, six hundred seventy-five thousand, four hundred twenty-one".