668482709895 has 384 divisors, whose sum is σ = 1620837335040. Its totient is φ = 254349849600.

The previous prime is 668482709821. The next prime is 668482709963. The reversal of 668482709895 is 598907284866.

668482709895 is a `hidden beast` number, since 6 + 68 + 482 + 7 + 0 + 9 + 89 + 5 = 666.

668482709895 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 668482709895 - 2⁸ = 668482709639 is a prime.

It is a super-2 number, since 2×668482709895² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 188781825 + ... + 188785365.

It is an arithmetic number, because the mean of its divisors is an integer number (4220930560).

Almost surely, 2^668482709895 is an apocalyptic number.

668482709895 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

668482709895 is an abundant number, since it is smaller than the sum of its proper divisors (952354625145).

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

668482709895 is a wasteful number, since it uses less digits than its factorization.

668482709895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3724 (or 3707 counting only the distinct ones).

The product of its (nonzero) digits is 418037760, while the sum is 72.

The spelling of 668482709895 in words is "six hundred sixty-eight billion, four hundred eighty-two million, seven hundred nine thousand, eight hundred ninety-five".