668260084 has 12 divisors (see below), whose sum is σ = 1172374308. Its totient is φ = 333296000.

The previous prime is 668260081. The next prime is 668260091. The reversal of 668260084 is 480062866.

It can be written as a sum of positive squares in 2 ways, for example, as 574944484 + 93315600 = 23978^2 + 9660^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668260081) 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, 206707 + ... + 209914.

It is an arithmetic number, because the mean of its divisors is an integer number (97697859).

Almost surely, 2^668260084 is an apocalyptic number.

It is an amenable number.

668260084 is a deficient number, since it is larger than the sum of its proper divisors (504114224).

668260084 is a wasteful number, since it uses less digits than its factorization.

668260084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417026 (or 417024 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 40.

The square root of 668260084 is about 25850.7269530278. The cubic root of 668260084 is about 874.2759000981.

It can be divided in two parts, 6682 and 60084, that added together give a palindrome (66766).

The spelling of 668260084 in words is "six hundred sixty-eight million, two hundred sixty thousand, eighty-four".