677881 has 4 divisors (see below), whose sum is σ = 692352. Its totient is φ = 663412.

The previous prime is 677857. The next prime is 677891. The reversal of 677881 is 188776.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 677881 - 2¹³ = 669689 is a prime.

It is a super-2 number, since 2×677881² = 919045300322, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 7.

It is a self number, because there is not a number n which added to its sum of digits gives 677881.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (677891) 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, 7165 + ... + 7258.

It is an arithmetic number, because the mean of its divisors is an integer number (173088).

2⁶⁷⁷⁸⁸¹ is an apocalyptic number.

It is an amenable number.

677881 is a deficient number, since it is larger than the sum of its proper divisors (14471).

677881 is a wasteful number, since it uses less digits than its factorization.

677881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14470.

The product of its digits is 18816, while the sum is 37.

The square root of 677881 is about 823.3352901461. The cubic root of 677881 is about 87.8451564182.

It can be divided in two parts, 6778 and 81, that added together give a cube (6859 = 19³).

The spelling of 677881 in words is "six hundred seventy-seven thousand, eight hundred eighty-one".