687354077 has 2 divisors, whose sum is σ = 687354078. Its totient is φ = 687354076.

The previous prime is 687354067. The next prime is 687354119. The reversal of 687354077 is 770453786.

687354077 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 344882041 + 342472036 = 18571^2 + 18506^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-687354077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (687354067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343677038 + 343677039.

It is an arithmetic number, because the mean of its divisors is an integer number (343677039).

Almost surely, 2^687354077 is an apocalyptic number.

It is an amenable number.

687354077 is a deficient number, since it is larger than the sum of its proper divisors (1).

687354077 is an equidigital number, since it uses as much as digits as its factorization.

687354077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 987840, while the sum is 47.

The square root of 687354077 is about 26217.4384141548. The cubic root of 687354077 is about 882.5246358955.

The spelling of 687354077 in words is "six hundred eighty-seven million, three hundred fifty-four thousand, seventy-seven".