678107653 has 2 divisors, whose sum is σ = 678107654. Its totient is φ = 678107652.

The previous prime is 678107579. The next prime is 678107707. The reversal of 678107653 is 356701876.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 529828324 + 148279329 = 23018^2 + 12177^2 .

It is a cyclic number.

It is not a de Polignac number, because 678107653 - 2⁹ = 678107141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (678107153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339053826 + 339053827.

It is an arithmetic number, because the mean of its divisors is an integer number (339053827).

Almost surely, 2^678107653 is an apocalyptic number.

It is an amenable number.

678107653 is a deficient number, since it is larger than the sum of its proper divisors (1).

678107653 is an equidigital number, since it uses as much as digits as its factorization.

678107653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 678107653 is about 26040.5002448110. The cubic root of 678107653 is about 878.5494582056.

The spelling of 678107653 in words is "six hundred seventy-eight million, one hundred seven thousand, six hundred fifty-three".