668007827 has 4 divisors (see below), whose sum is σ = 668064600. Its totient is φ = 667951056.

The previous prime is 668007797. The next prime is 668007859. The reversal of 668007827 is 728700866.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 668007827 - 2⁶ = 668007763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (668007727) 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, 3413 + ... + 36710.

It is an arithmetic number, because the mean of its divisors is an integer number (167016150).

Almost surely, 2^668007827 is an apocalyptic number.

668007827 is a deficient number, since it is larger than the sum of its proper divisors (56773).

668007827 is a wasteful number, since it uses less digits than its factorization.

668007827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56772.

The product of its (nonzero) digits is 225792, while the sum is 44.

The square root of 668007827 is about 25845.8473840577. The cubic root of 668007827 is about 874.1658780787.

The spelling of 668007827 in words is "six hundred sixty-eight million, seven thousand, eight hundred twenty-seven".