855266677 has 2 divisors, whose sum is σ = 855266678. Its totient is φ = 855266676.

The previous prime is 855266669. The next prime is 855266749. The reversal of 855266677 is 776662558.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 521619921 + 333646756 = 22839^2 + 18266^2 .

It is a cyclic number.

It is not a de Polignac number, because 855266677 - 2³ = 855266669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (855266977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427633338 + 427633339.

It is an arithmetic number, because the mean of its divisors is an integer number (427633339).

Almost surely, 2^855266677 is an apocalyptic number.

It is an amenable number.

855266677 is a deficient number, since it is larger than the sum of its proper divisors (1).

855266677 is an equidigital number, since it uses as much as digits as its factorization.

855266677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4233600, while the sum is 52.

The square root of 855266677 is about 29244.9427593900. The cubic root of 855266677 is about 949.2206635206.

The spelling of 855266677 in words is "eight hundred fifty-five million, two hundred sixty-six thousand, six hundred seventy-seven".