677544136 has 8 divisors (see below), whose sum is σ = 1270395270. Its totient is φ = 338772064.

The previous prime is 677544121. The next prime is 677544149. The reversal of 677544136 is 631445776.

It can be written as a sum of positive squares in only one way, i.e., 676312036 + 1232100 = 26006^2 + 1110^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 677544092 and 677544101.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42346501 + ... + 42346516.

Almost surely, 2^677544136 is an apocalyptic number.

It is an amenable number.

677544136 is a deficient number, since it is larger than the sum of its proper divisors (592851134).

677544136 is a wasteful number, since it uses less digits than its factorization.

677544136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84693023 (or 84693019 counting only the distinct ones).

The product of its digits is 423360, while the sum is 43.

The square root of 677544136 is about 26029.6779849463. The cubic root of 677544136 is about 878.3060284419.

The spelling of 677544136 in words is "six hundred seventy-seven million, five hundred forty-four thousand, one hundred thirty-six".