857495677 has 2 divisors, whose sum is σ = 857495678. Its totient is φ = 857495676.

The previous prime is 857495671. The next prime is 857495701. The reversal of 857495677 is 776594758.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 856089081 + 1406596 = 29259^2 + 1186^2 .

It is a cyclic number.

It is not a de Polignac number, because 857495677 - 2¹¹ = 857493629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (857495671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428747838 + 428747839.

It is an arithmetic number, because the mean of its divisors is an integer number (428747839).

Almost surely, 2^857495677 is an apocalyptic number.

It is an amenable number.

857495677 is a deficient number, since it is larger than the sum of its proper divisors (1).

857495677 is an equidigital number, since it uses as much as digits as its factorization.

857495677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14817600, while the sum is 58.

The square root of 857495677 is about 29283.0271146956. The cubic root of 857495677 is about 950.0445692848.

The spelling of 857495677 in words is "eight hundred fifty-seven million, four hundred ninety-five thousand, six hundred seventy-seven".