86725643 has 2 divisors, whose sum is σ = 86725644. Its totient is φ = 86725642.

The previous prime is 86725603. The next prime is 86725673. The reversal of 86725643 is 34652768.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86725643 - 2¹⁶ = 86660107 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86725643.

It is not a weakly prime, because it can be changed into another prime (86725603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43362821 + 43362822.

It is an arithmetic number, because the mean of its divisors is an integer number (43362822).

Almost surely, 2^86725643 is an apocalyptic number.

86725643 is a deficient number, since it is larger than the sum of its proper divisors (1).

86725643 is an equidigital number, since it uses as much as digits as its factorization.

86725643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 41.

The square root of 86725643 is about 9312.6603610354. The cubic root of 86725643 is about 442.6384904915.

The spelling of 86725643 in words is "eighty-six million, seven hundred twenty-five thousand, six hundred forty-three".