664024607777 has 8 divisors (see below), whose sum is σ = 697831016256. Its totient is φ = 631052925552.

The previous prime is 664024607749. The next prime is 664024607791. The reversal of 664024607777 is 777706420466.

664024607777 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 664024607777 - 2⁶ = 664024607713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (664024607717) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208679933 + ... + 208683114.

It is an arithmetic number, because the mean of its divisors is an integer number (87228877032).

Almost surely, 2^664024607777 is an apocalyptic number.

It is an amenable number.

664024607777 is a deficient number, since it is larger than the sum of its proper divisors (33806408479).

664024607777 is a wasteful number, since it uses less digits than its factorization.

664024607777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417363127.

The product of its (nonzero) digits is 16595712, while the sum is 56.

The spelling of 664024607777 in words is "six hundred sixty-four billion, twenty-four million, six hundred seven thousand, seven hundred seventy-seven".