3652621 has 8 divisors (see below), whose sum is σ = 4195904. Its totient is φ = 3114720.

The previous prime is 3652613. The next prime is 3652633. The reversal of 3652621 is 1262563.

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

It is not a de Polignac number, because 3652621 - 2³ = 3652613 is a prime.

It is a d-powerful number, because it can be written as 3⁹ + 6² + 5⁹ + 2⁵ + 6⁸ + 2⁷ + 1 .

It is a Duffinian number.

3652621 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3652661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 241 + ... + 2713.

It is an arithmetic number, because the mean of its divisors is an integer number (524488).

Almost surely, 2^3652621 is an apocalyptic number.

It is an amenable number.

3652621 is a deficient number, since it is larger than the sum of its proper divisors (543283).

3652621 is a wasteful number, since it uses less digits than its factorization.

3652621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2691.

The product of its digits is 2160, while the sum is 25.

The square root of 3652621 is about 1911.1831414074. The cubic root of 3652621 is about 154.0050175461.

The spelling of 3652621 in words is "three million, six hundred fifty-two thousand, six hundred twenty-one".