8505340 has 24 divisors (see below), whose sum is σ = 17977680. Its totient is φ = 3379968.

The previous prime is 8505337. The next prime is 8505347. The reversal of 8505340 is 435058.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8505347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1956 + ... + 4564.

It is an arithmetic number, because the mean of its divisors is an integer number (749070).

Almost surely, 2^8505340 is an apocalyptic number.

It is an amenable number.

8505340 is an abundant number, since it is smaller than the sum of its proper divisors (9472340).

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

8505340 is a wasteful number, since it uses less digits than its factorization.

8505340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2781 (or 2779 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 8505340 is about 2916.3916060776. The cubic root of 8505340 is about 204.1254834792.

The spelling of 8505340 in words is "eight million, five hundred five thousand, three hundred forty".