664824840107 has 16 divisors (see below), whose sum is σ = 673994647200. Its totient is φ = 655705497600.

The previous prime is 664824840091. The next prime is 664824840109. The reversal of 664824840107 is 701048428466.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 664824840107 - 2⁴ = 664824840091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (664824840109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43907144 + ... + 43922282.

It is an arithmetic number, because the mean of its divisors is an integer number (42124665450).

Almost surely, 2^664824840107 is an apocalyptic number.

664824840107 is a deficient number, since it is larger than the sum of its proper divisors (9169807093).

664824840107 is a wasteful number, since it uses less digits than its factorization.

664824840107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16766.

The product of its (nonzero) digits is 2064384, while the sum is 50.

The spelling of 664824840107 in words is "six hundred sixty-four billion, eight hundred twenty-four million, eight hundred forty thousand, one hundred seven".