886641257 has 2 divisors, whose sum is σ = 886641258. Its totient is φ = 886641256.

The previous prime is 886641241. The next prime is 886641263. The reversal of 886641257 is 752146688.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 697963561 + 188677696 = 26419^2 + 13736^2 .

It is a cyclic number.

It is not a de Polignac number, because 886641257 - 2⁴ = 886641241 is a prime.

It is a super-2 number, since 2×886641257² = 1572265437229080098, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (886641227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 443320628 + 443320629.

It is an arithmetic number, because the mean of its divisors is an integer number (443320629).

Almost surely, 2^886641257 is an apocalyptic number.

It is an amenable number.

886641257 is a deficient number, since it is larger than the sum of its proper divisors (1).

886641257 is an equidigital number, since it uses as much as digits as its factorization.

886641257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 645120, while the sum is 47.

The square root of 886641257 is about 29776.5219090477. The cubic root of 886641257 is about 960.6886179806.

The spelling of 886641257 in words is "eight hundred eighty-six million, six hundred forty-one thousand, two hundred fifty-seven".