668832822527 has 16 divisors (see below), whose sum is σ = 690962226240. Its totient is φ = 646921562112.

The previous prime is 668832822521. The next prime is 668832822577. The reversal of 668832822527 is 725228238866.

It is a cyclic number.

It is not a de Polignac number, because 668832822527 - 2¹² = 668832818431 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 (668832822521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10171718 + ... + 10237260.

It is an arithmetic number, because the mean of its divisors is an integer number (43185139140).

Almost surely, 2^668832822527 is an apocalyptic number.

668832822527 is a deficient number, since it is larger than the sum of its proper divisors (22129403713).

668832822527 is a wasteful number, since it uses less digits than its factorization.

668832822527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67202.

The product of its digits is 30965760, while the sum is 59.

The spelling of 668832822527 in words is "six hundred sixty-eight billion, eight hundred thirty-two million, eight hundred twenty-two thousand, five hundred twenty-seven".