677331655717 has 8 divisors (see below), whose sum is σ = 684057461400. Its totient is φ = 670606233600.

The previous prime is 677331655643. The next prime is 677331655727. The reversal of 677331655717 is 717556133776.

It is a happy number.

677331655717 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 5269453281 + 672062202436 = 72591^2 + 819794^2 .

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 677331655717 - 2²⁷ = 677197437989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (677331655727) 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, 4578133 + ... + 4723765.

It is an arithmetic number, because the mean of its divisors is an integer number (85507182675).

Almost surely, 2^677331655717 is an apocalyptic number.

It is an amenable number.

677331655717 is a deficient number, since it is larger than the sum of its proper divisors (6725805683).

677331655717 is a wasteful number, since it uses less digits than its factorization.

677331655717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191783.

The product of its digits is 19448100, while the sum is 58.

The spelling of 677331655717 in words is "six hundred seventy-seven billion, three hundred thirty-one million, six hundred fifty-five thousand, seven hundred seventeen".