413621 has 4 divisors (see below), whose sum is σ = 445452. Its totient is φ = 381792.

The previous prime is 413597. The next prime is 413629. The reversal of 413621 is 126314.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 220900 + 192721 = 470^2 + 439^2 .

It is a cyclic number.

It is not a de Polignac number, because 413621 - 2⁶ = 413557 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 413621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (413629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15896 + ... + 15921.

It is an arithmetic number, because the mean of its divisors is an integer number (111363).

2⁴¹³⁶²¹ is an apocalyptic number.

It is an amenable number.

413621 is a deficient number, since it is larger than the sum of its proper divisors (31831).

413621 is a wasteful number, since it uses less digits than its factorization.

413621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31830.

The product of its digits is 144, while the sum is 17.

The square root of 413621 is about 643.1337341487. The cubic root of 413621 is about 74.5076490202.

Adding to 413621 its reverse (126314), we get a palindrome (539935).

The spelling of 413621 in words is "four hundred thirteen thousand, six hundred twenty-one".