1306663768 has 32 divisors (see below), whose sum is σ = 2534182560. Its totient is φ = 631192320.

The previous prime is 1306663753. The next prime is 1306663781. The reversal of 1306663768 is 8673666031.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14446 + ... + 53122.

It is an arithmetic number, because the mean of its divisors is an integer number (79193205).

Almost surely, 2^1306663768 is an apocalyptic number.

It is an amenable number.

1306663768 is a deficient number, since it is larger than the sum of its proper divisors (1227518792).

1306663768 is a wasteful number, since it uses less digits than its factorization.

1306663768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38827 (or 38823 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 46.

The square root of 1306663768 is about 36147.8044699813. The cubic root of 1306663768 is about 1093.2545234521.

The spelling of 1306663768 in words is "one billion, three hundred six million, six hundred sixty-three thousand, seven hundred sixty-eight".