7413621 has 4 divisors (see below), whose sum is σ = 9884832. Its totient is φ = 4942412.

The previous prime is 7413599. The next prime is 7413641. The reversal of 7413621 is 1263147.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1263147 = 3 ⋅421049.

It is a cyclic number.

It is not a de Polignac number, because 7413621 - 2⁷ = 7413493 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7413591 and 7413600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7413641) 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, 1235601 + ... + 1235606.

It is an arithmetic number, because the mean of its divisors is an integer number (2471208).

Almost surely, 2^7413621 is an apocalyptic number.

It is an amenable number.

7413621 is a deficient number, since it is larger than the sum of its proper divisors (2471211).

7413621 is a wasteful number, since it uses less digits than its factorization.

7413621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2471210.

The product of its digits is 1008, while the sum is 24.

The square root of 7413621 is about 2722.7965403239. The cubic root of 7413621 is about 194.9890066123.

Adding to 7413621 its reverse (1263147), we get a palindrome (8676768).

It can be divided in two parts, 74 and 13621, that added together give a triangular number (13695 = T₁₆₅).

The spelling of 7413621 in words is "seven million, four hundred thirteen thousand, six hundred twenty-one".