8019668 has 6 divisors (see below), whose sum is σ = 14034426. Its totient is φ = 4009832.

The previous prime is 8019667. The next prime is 8019679. The reversal of 8019668 is 8669108.

It can be written as a sum of positive squares in only one way, i.e., 6646084 + 1373584 = 2578^2 + 1172^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8019667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1002455 + ... + 1002462.

It is an arithmetic number, because the mean of its divisors is an integer number (2339071).

Almost surely, 2^8019668 is an apocalyptic number.

It is an amenable number.

8019668 is a deficient number, since it is larger than the sum of its proper divisors (6014758).

8019668 is a wasteful number, since it uses less digits than its factorization.

8019668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2004921 (or 2004919 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 8019668 is about 2831.9018344568. The cubic root of 8019668 is about 200.1637658671.

The spelling of 8019668 in words is "eight million, nineteen thousand, six hundred sixty-eight".