3453621 has 8 divisors (see below), whose sum is σ = 4613760. Its totient is φ = 2297952.

The previous prime is 3453589. The next prime is 3453623. The reversal of 3453621 is 1263543.

It is a happy number.

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

It is not a de Polignac number, because 3453621 - 2⁵ = 3453589 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3453591 and 3453600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3453623) 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, 1716 + ... + 3138.

It is an arithmetic number, because the mean of its divisors is an integer number (576720).

Almost surely, 2^3453621 is an apocalyptic number.

It is an amenable number.

3453621 is a deficient number, since it is larger than the sum of its proper divisors (1160139).

3453621 is a wasteful number, since it uses less digits than its factorization.

3453621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2235.

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

The square root of 3453621 is about 1858.3920469051. The cubic root of 3453621 is about 151.1558264480.

The spelling of 3453621 in words is "three million, four hundred fifty-three thousand, six hundred twenty-one".