13434621 has 16 divisors (see below), whose sum is σ = 18444288. Its totient is φ = 8694000.

The previous prime is 13434611. The next prime is 13434637. The reversal of 13434621 is 12643431.

It is not a de Polignac number, because 13434621 - 2⁶ = 13434557 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13434591 and 13434600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13434601) 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, 20976 + ... + 21606.

It is an arithmetic number, because the mean of its divisors is an integer number (1152768).

Almost surely, 2^13434621 is an apocalyptic number.

It is an amenable number.

13434621 is a deficient number, since it is larger than the sum of its proper divisors (5009667).

13434621 is a wasteful number, since it uses less digits than its factorization.

13434621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832.

The product of its digits is 1728, while the sum is 24.

The square root of 13434621 is about 3665.3268612772. The cubic root of 13434621 is about 237.7251552708.

The spelling of 13434621 in words is "thirteen million, four hundred thirty-four thousand, six hundred twenty-one".