6468723691 has 4 divisors (see below), whose sum is σ = 6474485032. Its totient is φ = 6462962352.

The previous prime is 6468723683. The next prime is 6468723707. The reversal of 6468723691 is 1963278646.

6468723691 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6468723691 - 2³ = 6468723683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6468723671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2878986 + ... + 2881231.

It is an arithmetic number, because the mean of its divisors is an integer number (1618621258).

Almost surely, 2^6468723691 is an apocalyptic number.

6468723691 is a deficient number, since it is larger than the sum of its proper divisors (5761341).

6468723691 is a wasteful number, since it uses less digits than its factorization.

6468723691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5761340.

The product of its digits is 2612736, while the sum is 52.

The square root of 6468723691 is about 80428.3761554341. The cubic root of 6468723691 is about 1863.2574524103.

The spelling of 6468723691 in words is "six billion, four hundred sixty-eight million, seven hundred twenty-three thousand, six hundred ninety-one".