86247071 has 2 divisors, whose sum is σ = 86247072. Its totient is φ = 86247070.

The previous prime is 86247019. The next prime is 86247089. The reversal of 86247071 is 17074268.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86247071 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86247571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43123535 + 43123536.

It is an arithmetic number, because the mean of its divisors is an integer number (43123536).

Almost surely, 2^86247071 is an apocalyptic number.

86247071 is a deficient number, since it is larger than the sum of its proper divisors (1).

86247071 is an equidigital number, since it uses as much as digits as its factorization.

86247071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 86247071 is about 9286.9301171054. The cubic root of 86247071 is about 441.8227946583.

The spelling of 86247071 in words is "eighty-six million, two hundred forty-seven thousand, seventy-one".