668485267 has 4 divisors (see below), whose sum is σ = 684031480. Its totient is φ = 652939056.

The previous prime is 668485261. The next prime is 668485313. The reversal of 668485267 is 762584866.

668485267 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 668485267 - 2²³ = 660096659 is a prime.

It is a super-2 number, since 2×668485267² = 893745104392122578, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (668485261) 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, 7773042 + ... + 7773127.

It is an arithmetic number, because the mean of its divisors is an integer number (171007870).

Almost surely, 2^668485267 is an apocalyptic number.

668485267 is a deficient number, since it is larger than the sum of its proper divisors (15546213).

668485267 is a wasteful number, since it uses less digits than its factorization.

668485267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15546212.

The product of its digits is 3870720, while the sum is 52.

The square root of 668485267 is about 25855.0820342926. The cubic root of 668485267 is about 874.3740903914.

The spelling of 668485267 in words is "six hundred sixty-eight million, four hundred eighty-five thousand, two hundred sixty-seven".