86745647 has 2 divisors, whose sum is σ = 86745648. Its totient is φ = 86745646.

The previous prime is 86745623. The next prime is 86745671. The reversal of 86745647 is 74654768.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (86745623) and next prime (86745671).

It is a cyclic number.

It is not a de Polignac number, because 86745647 - 2⁸ = 86745391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86745677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43372823 + 43372824.

It is an arithmetic number, because the mean of its divisors is an integer number (43372824).

Almost surely, 2^86745647 is an apocalyptic number.

86745647 is a deficient number, since it is larger than the sum of its proper divisors (1).

86745647 is an equidigital number, since it uses as much as digits as its factorization.

86745647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1128960, while the sum is 47.

The square root of 86745647 is about 9313.7343208833. The cubic root of 86745647 is about 442.6725206405.

The spelling of 86745647 in words is "eighty-six million, seven hundred forty-five thousand, six hundred forty-seven".