103621 has 8 divisors (see below), whose sum is σ = 120384. Its totient is φ = 87360.

The previous prime is 103619. The next prime is 103643. The reversal of 103621 is 126301.

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

It is not a de Polignac number, because 103621 - 2¹ = 103619 is a prime.

It is a super-3 number, since 3×103621³ = 3337832908656183, which contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103651) 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, 726 + ... + 856.

It is an arithmetic number, because the mean of its divisors is an integer number (15048).

2¹⁰³⁶²¹ is an apocalyptic number.

It is an amenable number.

103621 is a deficient number, since it is larger than the sum of its proper divisors (16763).

103621 is a wasteful number, since it uses less digits than its factorization.

103621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 103621 is about 321.9021590484. The cubic root of 103621 is about 46.9694988461.

Adding to 103621 its reverse (126301), we get a palindrome (229922).

The spelling of 103621 in words is "one hundred three thousand, six hundred twenty-one".