677965853 has 4 divisors (see below), whose sum is σ = 679532028. Its totient is φ = 676399680.

The previous prime is 677965843. The next prime is 677965859. The reversal of 677965853 is 358569776.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 392119204 + 285846649 = 19802^2 + 16907^2 .

It is a cyclic number.

It is not a de Polignac number, because 677965853 - 2⁶ = 677965789 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 (677965859) 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 3 ways as a sum of consecutive naturals, for example, 782438 + ... + 783303.

It is an arithmetic number, because the mean of its divisors is an integer number (169883007).

Almost surely, 2^677965853 is an apocalyptic number.

It is an amenable number.

677965853 is a deficient number, since it is larger than the sum of its proper divisors (1566175).

677965853 is a wasteful number, since it uses less digits than its factorization.

677965853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1566174.

The product of its digits is 9525600, while the sum is 56.

The square root of 677965853 is about 26037.7774205096. Note that the first 3 decimals coincide. The cubic root of 677965853 is about 878.4882157184.

The spelling of 677965853 in words is "six hundred seventy-seven million, nine hundred sixty-five thousand, eight hundred fifty-three".