8664531 has 16 divisors (see below), whose sum is σ = 12023808. Its totient is φ = 5544000.

The previous prime is 8664529. The next prime is 8664547. The reversal of 8664531 is 1354668.

It is not a de Polignac number, because 8664531 - 2¹ = 8664529 is a prime.

It is a super-2 number, since 2×8664531² = 150148194899922, which contains 22 as substring.

It is an Ulam number.

8664531 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 8664492 and 8664501.

It is not an unprimeable number, because it can be changed into a prime (8664581) 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 15 ways as a sum of consecutive naturals, for example, 13735 + ... + 14351.

It is an arithmetic number, because the mean of its divisors is an integer number (751488).

Almost surely, 2^8664531 is an apocalyptic number.

8664531 is a deficient number, since it is larger than the sum of its proper divisors (3359277).

8664531 is a wasteful number, since it uses less digits than its factorization.

8664531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802.

The product of its digits is 17280, while the sum is 33.

The square root of 8664531 is about 2943.5575414794. The cubic root of 8664531 is about 205.3911311147.

The spelling of 8664531 in words is "eight million, six hundred sixty-four thousand, five hundred thirty-one".