8617940 has 12 divisors (see below), whose sum is σ = 18097716. Its totient is φ = 3447168.

The previous prime is 8617933. The next prime is 8617943. The reversal of 8617940 is 497168.

It can be written as a sum of positive squares in 2 ways, for example, as 3519376 + 5098564 = 1876^2 + 2258^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 8617940.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8617943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215429 + ... + 215468.

It is an arithmetic number, because the mean of its divisors is an integer number (1508143).

Almost surely, 2^8617940 is an apocalyptic number.

It is an amenable number.

8617940 is an abundant number, since it is smaller than the sum of its proper divisors (9479776).

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

8617940 is a wasteful number, since it uses less digits than its factorization.

8617940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430906 (or 430904 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 8617940 is about 2935.6328108263. The cubic root of 8617940 is about 205.0223255479.

The spelling of 8617940 in words is "eight million, six hundred seventeen thousand, nine hundred forty".