7662143868 has 12 divisors (see below), whose sum is σ = 17878335720. Its totient is φ = 2554047952.

The previous prime is 7662143833. The next prime is 7662143869. The reversal of 7662143868 is 8683412667.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 7662143868.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7662143869) 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, 319255983 + ... + 319256006.

It is an arithmetic number, because the mean of its divisors is an integer number (1489861310).

Almost surely, 2^7662143868 is an apocalyptic number.

It is an amenable number.

7662143868 is an abundant number, since it is smaller than the sum of its proper divisors (10216191852).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7662143868 is a wasteful number, since it uses less digits than its factorization.

7662143868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638511996 (or 638511994 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 51.

The square root of 7662143868 is about 87533.6727665417. The cubic root of 7662143868 is about 1971.4394101093.

The spelling of 7662143868 in words is "seven billion, six hundred sixty-two million, one hundred forty-three thousand, eight hundred sixty-eight".