3504621 has 8 divisors (see below), whose sum is σ = 4834080. Its totient is φ = 2255792.

The previous prime is 3504619. The next prime is 3504637. The reversal of 3504621 is 1264053.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 3504621 - 2¹ = 3504619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3504691) 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, 20055 + ... + 20228.

It is an arithmetic number, because the mean of its divisors is an integer number (604260).

Almost surely, 2^3504621 is an apocalyptic number.

It is an amenable number.

3504621 is a deficient number, since it is larger than the sum of its proper divisors (1329459).

3504621 is a wasteful number, since it uses less digits than its factorization.

3504621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40315.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 3504621 is about 1872.0633002118. The cubic root of 3504621 is about 151.8962386258.

Adding to 3504621 its reverse (1264053), we get a palindrome (4768674).

The spelling of 3504621 in words is "three million, five hundred four thousand, six hundred twenty-one".