857970677 has 2 divisors, whose sum is σ = 857970678. Its totient is φ = 857970676.

The previous prime is 857970667. The next prime is 857970691. The reversal of 857970677 is 776079758.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 512977201 + 344993476 = 22649^2 + 18574^2 .

It is a cyclic number.

It is not a de Polignac number, because 857970677 - 2⁴ = 857970661 is a prime.

It is a super-2 number, since 2×857970677² = 1472227365183676658, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (857970647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428985338 + 428985339.

It is an arithmetic number, because the mean of its divisors is an integer number (428985339).

Almost surely, 2^857970677 is an apocalyptic number.

It is an amenable number.

857970677 is a deficient number, since it is larger than the sum of its proper divisors (1).

857970677 is an equidigital number, since it uses as much as digits as its factorization.

857970677 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5186160, while the sum is 56.

The square root of 857970677 is about 29291.1364921199. The cubic root of 857970677 is about 950.2199590400.

The spelling of 857970677 in words is "eight hundred fifty-seven million, nine hundred seventy thousand, six hundred seventy-seven".