668670467 has 4 divisors (see below), whose sum is σ = 697743120. Its totient is φ = 639597816.

The previous prime is 668670463. The next prime is 668670473. The reversal of 668670467 is 764076866.

668670467 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 668670467 - 2² = 668670463 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (668670461) 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, 14536292 + ... + 14536337.

It is an arithmetic number, because the mean of its divisors is an integer number (174435780).

Almost surely, 2^668670467 is an apocalyptic number.

668670467 is a deficient number, since it is larger than the sum of its proper divisors (29072653).

668670467 is a wasteful number, since it uses less digits than its factorization.

668670467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29072652.

The product of its (nonzero) digits is 2032128, while the sum is 50.

The square root of 668670467 is about 25858.6632871848. The cubic root of 668670467 is about 874.4548297074.

The spelling of 668670467 in words is "six hundred sixty-eight million, six hundred seventy thousand, four hundred sixty-seven".