1668264763 has 8 divisors (see below), whose sum is σ = 1821162096. Its totient is φ = 1515573600.

The previous prime is 1668264749. The next prime is 1668264781. The reversal of 1668264763 is 3674628661.

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

It is a cyclic number.

It is not a de Polignac number, because 1668264763 - 2¹³ = 1668256571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1668264263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34368 + ... + 67213.

It is an arithmetic number, because the mean of its divisors is an integer number (227645262).

Almost surely, 2^1668264763 is an apocalyptic number.

1668264763 is a deficient number, since it is larger than the sum of its proper divisors (152897333).

1668264763 is a wasteful number, since it uses less digits than its factorization.

1668264763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103085.

The product of its digits is 1741824, while the sum is 49.

The square root of 1668264763 is about 40844.3969596810. The cubic root of 1668264763 is about 1186.0099309845.

The spelling of 1668264763 in words is "one billion, six hundred sixty-eight million, two hundred sixty-four thousand, seven hundred sixty-three".