677169893 has 4 divisors (see below), whose sum is σ = 695471820. Its totient is φ = 658867968.

The previous prime is 677169881. The next prime is 677169907. The reversal of 677169893 is 398961776.

677169893 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 445125604 + 232044289 = 21098^2 + 15233^2 .

It is a cyclic number.

It is not a de Polignac number, because 677169893 - 2²⁶ = 610061029 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 (677169863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9150908 + ... + 9150981.

It is an arithmetic number, because the mean of its divisors is an integer number (173867955).

Almost surely, 2^677169893 is an apocalyptic number.

It is an amenable number.

677169893 is a deficient number, since it is larger than the sum of its proper divisors (18301927).

677169893 is a wasteful number, since it uses less digits than its factorization.

677169893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18301926.

The product of its digits is 3429216, while the sum is 56.

The square root of 677169893 is about 26022.4882169250. The cubic root of 677169893 is about 878.1442872340.

The spelling of 677169893 in words is "six hundred seventy-seven million, one hundred sixty-nine thousand, eight hundred ninety-three".