3648252621 has 16 divisors (see below), whose sum is σ = 5259401280. Its totient is φ = 2236128000.

The previous prime is 3648252593. The next prime is 3648252631. The reversal of 3648252621 is 1262528463.

It is not a de Polignac number, because 3648252621 - 2¹⁰ = 3648251597 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 3648252621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3648252631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176556 + ... + 196133.

It is an arithmetic number, because the mean of its divisors is an integer number (328712580).

Almost surely, 2^3648252621 is an apocalyptic number.

It is an amenable number.

3648252621 is a deficient number, since it is larger than the sum of its proper divisors (1611148659).

3648252621 is a wasteful number, since it uses less digits than its factorization.

3648252621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372956.

The product of its digits is 138240, while the sum is 39.

The square root of 3648252621 is about 60400.7667252660. The cubic root of 3648252621 is about 1539.4359857623.

The spelling of 3648252621 in words is "three billion, six hundred forty-eight million, two hundred fifty-two thousand, six hundred twenty-one".