677218613 has 12 divisors (see below), whose sum is σ = 720387780. Its totient is φ = 636506112.

The previous prime is 677218603. The next prime is 677218621. The reversal of 677218613 is 316812776.

It can be written as a sum of positive squares in 6 ways, for example, as 108014449 + 569204164 = 10393^2 + 23858^2 .

It is not a de Polignac number, because 677218613 - 2⁸ = 677218357 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 (677218603) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 319445 + ... + 321557.

It is an arithmetic number, because the mean of its divisors is an integer number (60032315).

Almost surely, 2^677218613 is an apocalyptic number.

It is an amenable number.

677218613 is a deficient number, since it is larger than the sum of its proper divisors (43169167).

677218613 is a wasteful number, since it uses less digits than its factorization.

677218613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3256 (or 3239 counting only the distinct ones).

The product of its digits is 84672, while the sum is 41.

The square root of 677218613 is about 26023.4243134911. The cubic root of 677218613 is about 878.1653465300.

The spelling of 677218613 in words is "six hundred seventy-seven million, two hundred eighteen thousand, six hundred thirteen".