866660701 has 2 divisors, whose sum is σ = 866660702. Its totient is φ = 866660700.

The previous prime is 866660689. The next prime is 866660713. The reversal of 866660701 is 107066668.

866660701 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (866660689) and next prime (866660713).

It can be written as a sum of positive squares in only one way, i.e., 545175801 + 321484900 = 23349^2 + 17930^2 .

It is a cyclic number.

It is not a de Polignac number, because 866660701 - 2¹³ = 866652509 is a prime.

It is a super-2 number, since 2×866660701² = 1502201541315622802, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (866660771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433330350 + 433330351.

It is an arithmetic number, because the mean of its divisors is an integer number (433330351).

Almost surely, 2^866660701 is an apocalyptic number.

It is an amenable number.

866660701 is a deficient number, since it is larger than the sum of its proper divisors (1).

866660701 is an equidigital number, since it uses as much as digits as its factorization.

866660701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 866660701 is about 29439.1015657747. The cubic root of 866660701 is about 953.4173143806.

The spelling of 866660701 in words is "eight hundred sixty-six million, six hundred sixty thousand, seven hundred one".