86500643 has 2 divisors, whose sum is σ = 86500644. Its totient is φ = 86500642.

The previous prime is 86500639. The next prime is 86500663. The reversal of 86500643 is 34600568.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86500643 - 2² = 86500639 is a prime.

It is a super-2 number, since 2×86500643² = 14964722478826898, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (86500663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43250321 + 43250322.

It is an arithmetic number, because the mean of its divisors is an integer number (43250322).

Almost surely, 2^86500643 is an apocalyptic number.

86500643 is a deficient number, since it is larger than the sum of its proper divisors (1).

86500643 is an equidigital number, since it uses as much as digits as its factorization.

86500643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 86500643 is about 9300.5721866991. The cubic root of 86500643 is about 442.2553669251.

The spelling of 86500643 in words is "eighty-six million, five hundred thousand, six hundred forty-three".