86866673 has 2 divisors, whose sum is σ = 86866674. Its totient is φ = 86866672.

The previous prime is 86866657. The next prime is 86866679. The reversal of 86866673 is 37666868.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83302129 + 3564544 = 9127^2 + 1888^2 .

It is a cyclic number.

It is not a de Polignac number, because 86866673 - 2⁴ = 86866657 is a prime.

It is not a weakly prime, because it can be changed into another prime (86866679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43433336 + 43433337.

It is an arithmetic number, because the mean of its divisors is an integer number (43433337).

Almost surely, 2^86866673 is an apocalyptic number.

It is an amenable number.

86866673 is a deficient number, since it is larger than the sum of its proper divisors (1).

86866673 is an equidigital number, since it uses as much as digits as its factorization.

86866673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1741824, while the sum is 50.

The square root of 86866673 is about 9320.2292353783. The cubic root of 86866673 is about 442.8782946094.

The spelling of 86866673 in words is "eighty-six million, eight hundred sixty-six thousand, six hundred seventy-three".