8669540 has 48 divisors (see below), whose sum is σ = 20067264. Its totient is φ = 3120000.

The previous prime is 8669527. The next prime is 8669543. The reversal of 8669540 is 459668.

It is a junction number, because it is equal to n+sod(n) for n = 8669494 and 8669503.

It is not an unprimeable number, because it can be changed into a prime (8669543) 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, 34415 + ... + 34665.

It is an arithmetic number, because the mean of its divisors is an integer number (418068).

Almost surely, 2^8669540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8669540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10033632).

8669540 is an abundant number, since it is smaller than the sum of its proper divisors (11397724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8669540 is a wasteful number, since it uses less digits than its factorization.

8669540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428 (or 426 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 8669540 is about 2944.4082597357. The cubic root of 8669540 is about 205.4307026347.

The spelling of 8669540 in words is "eight million, six hundred sixty-nine thousand, five hundred forty".