8734521 has 4 divisors (see below), whose sum is σ = 11646032. Its totient is φ = 5823012.

The previous prime is 8734519. The next prime is 8734543. The reversal of 8734521 is 1254378.

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.

It is not a de Polignac number, because 8734521 - 2¹ = 8734519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8734501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1455751 + ... + 1455756.

It is an arithmetic number, because the mean of its divisors is an integer number (2911508).

Almost surely, 2^8734521 is an apocalyptic number.

It is an amenable number.

8734521 is a deficient number, since it is larger than the sum of its proper divisors (2911511).

8734521 is a wasteful number, since it uses less digits than its factorization.

8734521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2911510.

The product of its digits is 6720, while the sum is 30.

The square root of 8734521 is about 2955.4223048492. The cubic root of 8734521 is about 205.9426820769.

Adding to 8734521 its reverse (1254378), we get a palindrome (9988899).

The spelling of 8734521 in words is "eight million, seven hundred thirty-four thousand, five hundred twenty-one".