677888 has 24 divisors (see below), whose sum is σ = 1359540. Its totient is φ = 337920.

The previous prime is 677857. The next prime is 677891. The reversal of 677888 is 888776.

It is a happy number.

It is a plaindrome in base 10.

It is a congruent number.

It is an unprimeable number.

677888 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1883 + ... + 2213.

2⁶⁷⁷⁸⁸⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 677888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (679770).

677888 is an abundant number, since it is smaller than the sum of its proper divisors (681652).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

677888 is an equidigital number, since it uses as much as digits as its factorization.

677888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353 (or 333 counting only the distinct ones).

The product of its digits is 150528, while the sum is 44.

The square root of 677888 is about 823.3395411372. The cubic root of 677888 is about 87.8454587889.

The spelling of 677888 in words is "six hundred seventy-seven thousand, eight hundred eighty-eight".