8668780 has 12 divisors (see below), whose sum is σ = 18204480. Its totient is φ = 3467504.

The previous prime is 8668763. The next prime is 8668783. The reversal of 8668780 is 878668.

It is a happy number.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (8668783) 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, 216700 + ... + 216739.

It is an arithmetic number, because the mean of its divisors is an integer number (1517040).

Almost surely, 2^8668780 is an apocalyptic number.

It is an amenable number.

8668780 is an abundant number, since it is smaller than the sum of its proper divisors (9535700).

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

8668780 is a wasteful number, since it uses less digits than its factorization.

8668780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433448 (or 433446 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 43.

The square root of 8668780 is about 2944.2791987174. The cubic root of 8668780 is about 205.4246995521.

It can be divided in two parts, 86 and 68780, that multiplied together give a triangular number (5915080 = T₃₄₃₉).

The spelling of 8668780 in words is "eight million, six hundred sixty-eight thousand, seven hundred eighty".