677161 has 8 divisors (see below), whose sum is σ = 729864. Its totient is φ = 625920.

The previous prime is 677147. The next prime is 677167. The reversal of 677161 is 161776.

It can be written as a sum of positive squares in 4 ways, for example, as 6400 + 670761 = 80^2 + 819^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 677161 - 2⁹ = 676649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (677167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 711 + ... + 1363.

It is an arithmetic number, because the mean of its divisors is an integer number (91233).

2⁶⁷⁷¹⁶¹ is an apocalyptic number.

677161 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

677161 is a deficient number, since it is larger than the sum of its proper divisors (52703).

677161 is a wasteful number, since it uses less digits than its factorization.

677161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731.

The product of its digits is 1764, while the sum is 28.

The square root of 677161 is about 822.8979280567. The cubic root of 677161 is about 87.8140443112.

It can be divided in two parts, 677 and 161, that added together give a palindrome (838).

The spelling of 677161 in words is "six hundred seventy-seven thousand, one hundred sixty-one".