8968521 has 8 divisors (see below), whose sum is σ = 11974720. Its totient is φ = 5970672.

The previous prime is 8968499. The next prime is 8968567. The reversal of 8968521 is 1258698.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8968521 - 2¹⁸ = 8706377 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 8968521.

It is not an unprimeable number, because it can be changed into a prime (8968591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1131 + ... + 4383.

It is an arithmetic number, because the mean of its divisors is an integer number (1496840).

Almost surely, 2^8968521 is an apocalyptic number.

It is an amenable number.

8968521 is a deficient number, since it is larger than the sum of its proper divisors (3006199).

8968521 is a wasteful number, since it uses less digits than its factorization.

8968521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4175.

The product of its digits is 34560, while the sum is 39.

The square root of 8968521 is about 2994.7489043324. The cubic root of 8968521 is about 207.7655843476.

The spelling of 8968521 in words is "eight million, nine hundred sixty-eight thousand, five hundred twenty-one".