8668719 has 6 divisors (see below), whose sum is σ = 12521496. Its totient is φ = 5779140.

The previous prime is 8668711. The next prime is 8668721. The reversal of 8668719 is 9178668.

It is a happy number.

It is not a de Polignac number, because 8668719 - 2³ = 8668711 is a prime.

It is a super-2 number, since 2×8668719² = 150293378201922, which contains 22 as substring.

8668719 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8668711) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 481587 + ... + 481604.

It is an arithmetic number, because the mean of its divisors is an integer number (2086916).

Almost surely, 2^8668719 is an apocalyptic number.

8668719 is a deficient number, since it is larger than the sum of its proper divisors (3852777).

8668719 is a wasteful number, since it uses less digits than its factorization.

8668719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 963197 (or 963194 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 8668719 is about 2944.2688396273. The cubic root of 8668719 is about 205.4242177105.

The spelling of 8668719 in words is "eight million, six hundred sixty-eight thousand, seven hundred nineteen".