8640260 has 24 divisors (see below), whose sum is σ = 18771480. Its totient is φ = 3336704.

The previous prime is 8640259. The next prime is 8640263. The reversal of 8640260 is 620468.

It can be written as a sum of positive squares in 4 ways, for example, as 2715904 + 5924356 = 1648^2 + 2434^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8640263) 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, 6869 + ... + 8028.

It is an arithmetic number, because the mean of its divisors is an integer number (782145).

Almost surely, 2^8640260 is an apocalyptic number.

It is an amenable number.

8640260 is an abundant number, since it is smaller than the sum of its proper divisors (10131220).

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

8640260 is a wasteful number, since it uses less digits than its factorization.

8640260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14935 (or 14933 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 8640260 is about 2939.4319179052. The cubic root of 8640260 is about 205.1991718849.

The spelling of 8640260 in words is "eight million, six hundred forty thousand, two hundred sixty".