677965859 has 2 divisors, whose sum is σ = 677965860. Its totient is φ = 677965858.

The previous prime is 677965843. The next prime is 677965861. The reversal of 677965859 is 958569776.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 677965859 - 2⁴ = 677965843 is a prime.

Together with 677965861, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (677965889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338982929 + 338982930.

It is an arithmetic number, because the mean of its divisors is an integer number (338982930).

Almost surely, 2^677965859 is an apocalyptic number.

677965859 is a deficient number, since it is larger than the sum of its proper divisors (1).

677965859 is an equidigital number, since it uses as much as digits as its factorization.

677965859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28576800, while the sum is 62.

The square root of 677965859 is about 26037.7775357268. Note that the first 3 decimals coincide. The cubic root of 677965859 is about 878.4882183100.

The spelling of 677965859 in words is "six hundred seventy-seven million, nine hundred sixty-five thousand, eight hundred fifty-nine".