86896643 has 2 divisors, whose sum is σ = 86896644. Its totient is φ = 86896642.

The previous prime is 86896637. The next prime is 86896681. The reversal of 86896643 is 34669868.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86896643 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 86896591 and 86896600.

It is not a weakly prime, because it can be changed into another prime (86893643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43448321 + 43448322.

It is an arithmetic number, because the mean of its divisors is an integer number (43448322).

Almost surely, 2^86896643 is an apocalyptic number.

86896643 is a deficient number, since it is larger than the sum of its proper divisors (1).

86896643 is an equidigital number, since it uses as much as digits as its factorization.

86896643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1492992, while the sum is 50.

The square root of 86896643 is about 9321.8368897981. The cubic root of 86896643 is about 442.9292214527.

The spelling of 86896643 in words is "eighty-six million, eight hundred ninety-six thousand, six hundred forty-three".