668301012 has 72 divisors (see below), whose sum is σ = 1734917184. Its totient is φ = 216792576.

The previous prime is 668300999. The next prime is 668301013. The reversal of 668301012 is 210103866.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668301013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 545833 + ... + 547055.

It is an arithmetic number, because the mean of its divisors is an integer number (24096072).

Almost surely, 2^668301012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 668301012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (867458592).

668301012 is an abundant number, since it is smaller than the sum of its proper divisors (1066616172).

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

668301012 is a wasteful number, since it uses less digits than its factorization.

668301012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1629 (or 1624 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 668301012 is about 25851.5185627460. The cubic root of 668301012 is about 874.2937482556.

Adding to 668301012 its reverse (210103866), we get a palindrome (878404878).

The spelling of 668301012 in words is "six hundred sixty-eight million, three hundred one thousand, twelve".