363621 has 8 divisors (see below), whose sum is σ = 493024. Its totient is φ = 238320.

The previous prime is 363619. The next prime is 363659. The reversal of 363621 is 126363.

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

It is not a de Polignac number, because 363621 - 2¹ = 363619 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 363621.

It is not an unprimeable number, because it can be changed into a prime (363611) 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, 811 + ... + 1176.

It is an arithmetic number, because the mean of its divisors is an integer number (61628).

2³⁶³⁶²¹ is an apocalyptic number.

It is an amenable number.

363621 is a deficient number, since it is larger than the sum of its proper divisors (129403).

363621 is a wasteful number, since it uses less digits than its factorization.

363621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2051.

The product of its digits is 648, while the sum is 21.

The square root of 363621 is about 603.0099501667. The cubic root of 363621 is about 71.3755803160.

Adding to 363621 its reverse (126363), we get a palindrome (489984).

It can be divided in two parts, 36362 and 1, that added together give a palindrome (36363).

The spelling of 363621 in words is "three hundred sixty-three thousand, six hundred twenty-one".