866684153 has 2 divisors, whose sum is σ = 866684154. Its totient is φ = 866684152.

The previous prime is 866684051. The next prime is 866684197. The reversal of 866684153 is 351486668.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 837986704 + 28697449 = 28948^2 + 5357^2 .

It is a cyclic number.

It is not a de Polignac number, because 866684153 - 2¹² = 866680057 is a prime.

It is a super-2 number, since 2×866684153² = 1502282842122654818, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 866684098 and 866684107.

It is not a weakly prime, because it can be changed into another prime (866684353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433342076 + 433342077.

It is an arithmetic number, because the mean of its divisors is an integer number (433342077).

Almost surely, 2^866684153 is an apocalyptic number.

It is an amenable number.

866684153 is a deficient number, since it is larger than the sum of its proper divisors (1).

866684153 is an equidigital number, since it uses as much as digits as its factorization.

866684153 is an evil number, because the sum of its binary digits is even.

The product of its digits is 829440, while the sum is 47.

The square root of 866684153 is about 29439.4998768661. The cubic root of 866684153 is about 953.4259141864.

The spelling of 866684153 in words is "eight hundred sixty-six million, six hundred eighty-four thousand, one hundred fifty-three".