866087371 has 2 divisors, whose sum is σ = 866087372. Its totient is φ = 866087370.

The previous prime is 866087351. The next prime is 866087437. The reversal of 866087371 is 173780668.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 866087371 - 2¹¹ = 866085323 is a prime.

It is not a weakly prime, because it can be changed into another prime (866087351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433043685 + 433043686.

It is an arithmetic number, because the mean of its divisors is an integer number (433043686).

Almost surely, 2^866087371 is an apocalyptic number.

866087371 is a deficient number, since it is larger than the sum of its proper divisors (1).

866087371 is an equidigital number, since it uses as much as digits as its factorization.

866087371 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 338688, while the sum is 46.

The square root of 866087371 is about 29429.3623954037. The cubic root of 866087371 is about 953.2070270367.

The spelling of 866087371 in words is "eight hundred sixty-six million, eighty-seven thousand, three hundred seventy-one".