86700073 has 2 divisors, whose sum is σ = 86700074. Its totient is φ = 86700072.

The previous prime is 86700043. The next prime is 86700079. The reversal of 86700073 is 37000768.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76790169 + 9909904 = 8763^2 + 3148^2 .

It is a cyclic number.

It is not a de Polignac number, because 86700073 - 2¹⁷ = 86569001 is a prime.

It is equal to p_5036782 and since 86700073 and 5036782 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (86700079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43350036 + 43350037.

It is an arithmetic number, because the mean of its divisors is an integer number (43350037).

Almost surely, 2^86700073 is an apocalyptic number.

It is an amenable number.

86700073 is a deficient number, since it is larger than the sum of its proper divisors (1).

86700073 is an equidigital number, since it uses as much as digits as its factorization.

86700073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 86700073 is about 9311.2873975622. The cubic root of 86700073 is about 442.5949840254.

The spelling of 86700073 in words is "eighty-six million, seven hundred thousand, seventy-three".