677718853 has 6 divisors (see below), whose sum is σ = 788366886. Its totient is φ = 580901832.

The previous prime is 677718793. The next prime is 677718857. The reversal of 677718853 is 358817776.

It can be written as a sum of positive squares in only one way, i.e., 677717089 + 1764 = 26033^2 + 42^2 .

It is not a de Polignac number, because 677718853 - 2⁹ = 677718341 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 677718853.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (677718857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6915450 + ... + 6915547.

It is an arithmetic number, because the mean of its divisors is an integer number (131394481).

Almost surely, 2^677718853 is an apocalyptic number.

It is an amenable number.

677718853 is a deficient number, since it is larger than the sum of its proper divisors (110648033).

677718853 is a wasteful number, since it uses less digits than its factorization.

677718853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13831011 (or 13831004 counting only the distinct ones).

The product of its digits is 1975680, while the sum is 52.

The square root of 677718853 is about 26033.0338800532. The cubic root of 677718853 is about 878.3815176476.

The spelling of 677718853 in words is "six hundred seventy-seven million, seven hundred eighteen thousand, eight hundred fifty-three".