2663893817 has 8 divisors (see below), whose sum is σ = 2935525824. Its totient is φ = 2401792848.

The previous prime is 2663893789. The next prime is 2663893823. The reversal of 2663893817 is 7183983662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2663893817 - 2¹⁶ = 2663828281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2663893867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2382173 + ... + 2383290.

It is an arithmetic number, because the mean of its divisors is an integer number (366940728).

Almost surely, 2^2663893817 is an apocalyptic number.

It is an amenable number.

2663893817 is a deficient number, since it is larger than the sum of its proper divisors (271632007).

2663893817 is a wasteful number, since it uses less digits than its factorization.

2663893817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4765519.

The product of its digits is 2612736, while the sum is 53.

The square root of 2663893817 is about 51612.9229650870. The cubic root of 2663893817 is about 1386.2417353652.

The spelling of 2663893817 in words is "two billion, six hundred sixty-three million, eight hundred ninety-three thousand, eight hundred seventeen".