3543621 has 8 divisors (see below), whose sum is σ = 4734624. Its totient is φ = 2357520.

The previous prime is 3543613. The next prime is 3543629. The reversal of 3543621 is 1263453.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3543613) and next prime (3543629).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3543621 - 2³ = 3543613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3543591 and 3543600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3543629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1090 + ... + 2876.

It is an arithmetic number, because the mean of its divisors is an integer number (591828).

Almost surely, 2^3543621 is an apocalyptic number.

It is an amenable number.

3543621 is a deficient number, since it is larger than the sum of its proper divisors (1191003).

3543621 is a wasteful number, since it uses less digits than its factorization.

3543621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2451.

The product of its digits is 2160, while the sum is 24.

The square root of 3543621 is about 1882.4507961697. The cubic root of 3543621 is about 152.4576035509.

The spelling of 3543621 in words is "three million, five hundred forty-three thousand, six hundred twenty-one".