677663656417 has 8 divisors (see below), whose sum is σ = 739766616192. Its totient is φ = 615643558800.

The previous prime is 677663656363. The next prime is 677663656429. The reversal of 677663656417 is 714656366776.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-677663656417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (677663656217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20698434 + ... + 20731147.

It is an arithmetic number, because the mean of its divisors is an integer number (92470827024).

Almost surely, 2^677663656417 is an apocalyptic number.

It is an amenable number.

677663656417 is a deficient number, since it is larger than the sum of its proper divisors (62102959775).

677663656417 is a wasteful number, since it uses less digits than its factorization.

677663656417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41431079.

The product of its digits is 160030080, while the sum is 64.

The spelling of 677663656417 in words is "six hundred seventy-seven billion, six hundred sixty-three million, six hundred fifty-six thousand, four hundred seventeen".