86343661 has 2 divisors, whose sum is σ = 86343662. Its totient is φ = 86343660.

The previous prime is 86343659. The next prime is 86343683. The reversal of 86343661 is 16634368.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83722500 + 2621161 = 9150^2 + 1619^2 .

It is a cyclic number.

It is not a de Polignac number, because 86343661 - 2¹ = 86343659 is a prime.

Together with 86343659, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 86343661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86343611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43171830 + 43171831.

It is an arithmetic number, because the mean of its divisors is an integer number (43171831).

Almost surely, 2^86343661 is an apocalyptic number.

It is an amenable number.

86343661 is a deficient number, since it is larger than the sum of its proper divisors (1).

86343661 is an equidigital number, since it uses as much as digits as its factorization.

86343661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 37.

The square root of 86343661 is about 9292.1289810247. The cubic root of 86343661 is about 441.9876688274.

The spelling of 86343661 in words is "eighty-six million, three hundred forty-three thousand, six hundred sixty-one".