677729608 has 8 divisors (see below), whose sum is σ = 1270743030. Its totient is φ = 338864800.

The previous prime is 677729561. The next prime is 677729609. The reversal of 677729608 is 806927776.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 633931684 + 43797924 = 25178^2 + 6618^2 .

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

It is not an unprimeable number, because it can be changed into a prime (677729609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42358093 + ... + 42358108.

Almost surely, 2^677729608 is an apocalyptic number.

It is an amenable number.

677729608 is a deficient number, since it is larger than the sum of its proper divisors (593013422).

677729608 is a wasteful number, since it uses less digits than its factorization.

677729608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84716207 (or 84716203 counting only the distinct ones).

The product of its (nonzero) digits is 1778112, while the sum is 52.

The square root of 677729608 is about 26033.2404437097. The cubic root of 677729608 is about 878.3861640892.

The spelling of 677729608 in words is "six hundred seventy-seven million, seven hundred twenty-nine thousand, six hundred eight".