3567421 has 24 divisors (see below), whose sum is σ = 4479840. Its totient is φ = 2808000.

The previous prime is 3567419. The next prime is 3567439. The reversal of 3567421 is 1247653.

It is not a de Polignac number, because 3567421 - 2¹ = 3567419 is a prime.

It is a Duffinian number.

Its product of digits (5040) is a multiple of the sum of its prime divisors (144).

3567421 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3567421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3567401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35271 + ... + 35371.

It is an arithmetic number, because the mean of its divisors is an integer number (186660).

Almost surely, 2^3567421 is an apocalyptic number.

It is an amenable number.

3567421 is a deficient number, since it is larger than the sum of its proper divisors (912419).

3567421 is a wasteful number, since it uses less digits than its factorization.

3567421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157 (or 144 counting only the distinct ones).

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

The square root of 3567421 is about 1888.7617636960. The cubic root of 3567421 is about 152.7981589510.

It can be divided in two parts, 356 and 7421, that added together give a palindrome (7777).

The spelling of 3567421 in words is "three million, five hundred sixty-seven thousand, four hundred twenty-one".