664822760855 has 8 divisors (see below), whose sum is σ = 870313432464. Its totient is φ = 483507462400.

The previous prime is 664822760827. The next prime is 664822760863. The reversal of 664822760855 is 558067228466.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 664822760855 - 2⁸ = 664822760599 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 664822760794 and 664822760803.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6043843226 + ... + 6043843335.

It is an arithmetic number, because the mean of its divisors is an integer number (108789179058).

Almost surely, 2^664822760855 is an apocalyptic number.

664822760855 is a deficient number, since it is larger than the sum of its proper divisors (205490671609).

664822760855 is a wasteful number, since it uses less digits than its factorization.

664822760855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12087686577.

The product of its (nonzero) digits is 38707200, while the sum is 59.

The spelling of 664822760855 in words is "six hundred sixty-four billion, eight hundred twenty-two million, seven hundred sixty thousand, eight hundred fifty-five".