677888928 has 36 divisors (see below), whose sum is σ = 1927747458. Its totient is φ = 225962880.

The previous prime is 677888927. The next prime is 677888929. The reversal of 677888928 is 829888776.

It is an interprime number because it is at equal distance from previous prime (677888927) and next prime (677888929).

It can be written as a sum of positive squares in only one way, i.e., 349989264 + 327899664 = 18708^2 + 18108^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (677888927) 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 5 ways as a sum of consecutive naturals, for example, 1176603 + ... + 1177178.

Almost surely, 2^677888928 is an apocalyptic number.

It is an amenable number.

677888928 is an abundant number, since it is smaller than the sum of its proper divisors (1249858530).

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

677888928 is a wasteful number, since it uses less digits than its factorization.

677888928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2353797 (or 2353786 counting only the distinct ones).

The product of its digits is 21676032, while the sum is 63.

The square root of 677888928 is about 26036.3001979928. The cubic root of 677888928 is about 878.4549887441.

The spelling of 677888928 in words is "six hundred seventy-seven million, eight hundred eighty-eight thousand, nine hundred twenty-eight".