86747173 has 2 divisors, whose sum is σ = 86747174. Its totient is φ = 86747172.

The previous prime is 86747153. The next prime is 86747231. The reversal of 86747173 is 37174768.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75030244 + 11716929 = 8662^2 + 3423^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86747173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86747113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43373586 + 43373587.

It is an arithmetic number, because the mean of its divisors is an integer number (43373587).

Almost surely, 2^86747173 is an apocalyptic number.

It is an amenable number.

86747173 is a deficient number, since it is larger than the sum of its proper divisors (1).

86747173 is an equidigital number, since it uses as much as digits as its factorization.

86747173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 197568, while the sum is 43.

The square root of 86747173 is about 9313.8162425506. The cubic root of 86747173 is about 442.6751164069.

The spelling of 86747173 in words is "eighty-six million, seven hundred forty-seven thousand, one hundred seventy-three".