34243621 has 4 divisors (see below), whose sum is σ = 34271244. Its totient is φ = 34216000.

The previous prime is 34243607. The next prime is 34243637. The reversal of 34243621 is 12634243.

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 13586596 + 20657025 = 3686^2 + 4545^2 .

It is a cyclic number.

It is not a de Polignac number, because 34243621 - 2⁹ = 34243109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34243691) 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, 11860 + ... + 14461.

It is an arithmetic number, because the mean of its divisors is an integer number (8567811).

Almost surely, 2^34243621 is an apocalyptic number.

It is an amenable number.

34243621 is a deficient number, since it is larger than the sum of its proper divisors (27623).

34243621 is a wasteful number, since it uses less digits than its factorization.

34243621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27622.

The product of its digits is 3456, while the sum is 25.

The square root of 34243621 is about 5851.8049352315. The cubic root of 34243621 is about 324.7331015862.

Adding to 34243621 its reverse (12634243), we get a palindrome (46877864).

The spelling of 34243621 in words is "thirty-four million, two hundred forty-three thousand, six hundred twenty-one".