662808123871 has 8 divisors (see below), whose sum is σ = 666375217200. Its totient is φ = 659243077248.

The previous prime is 662808123853. The next prime is 662808123883. The reversal of 662808123871 is 178321808266.

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 662808123871 - 2²³ = 662799735263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662808124871) 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, 139975 + ... + 1159831.

It is an arithmetic number, because the mean of its divisors is an integer number (83296902150).

Almost surely, 2^662808123871 is an apocalyptic number.

662808123871 is a deficient number, since it is larger than the sum of its proper divisors (3567093329).

662808123871 is a wasteful number, since it uses less digits than its factorization.

662808123871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1023353.

The product of its (nonzero) digits is 1548288, while the sum is 52.

The spelling of 662808123871 in words is "six hundred sixty-two billion, eight hundred eight million, one hundred twenty-three thousand, eight hundred seventy-one".