678077 has 2 divisors, whose sum is σ = 678078. Its totient is φ = 678076.

The previous prime is 678061. The next prime is 678101. The reversal of 678077 is 770876.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 568516 + 109561 = 754^2 + 331^2 .

It is a cyclic number.

It is not a de Polignac number, because 678077 - 2⁴ = 678061 is a prime.

It is a Chen prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 678077.

It is not a weakly prime, because it can be changed into another prime (678037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339038 + 339039.

It is an arithmetic number, because the mean of its divisors is an integer number (339039).

2⁶⁷⁸⁰⁷⁷ is an apocalyptic number.

It is an amenable number.

678077 is a deficient number, since it is larger than the sum of its proper divisors (1).

678077 is an equidigital number, since it uses as much as digits as its factorization.

678077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16464, while the sum is 35.

The square root of 678077 is about 823.4543096007. The cubic root of 678077 is about 87.8536220100.

The spelling of 678077 in words is "six hundred seventy-eight thousand, seventy-seven".