85964647 has 2 divisors, whose sum is σ = 85964648. Its totient is φ = 85964646.

The previous prime is 85964609. The next prime is 85964657. The reversal of 85964647 is 74646958.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85964647 - 2¹¹ = 85962599 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85964647.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85964657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42982323 + 42982324.

It is an arithmetic number, because the mean of its divisors is an integer number (42982324).

Almost surely, 2^85964647 is an apocalyptic number.

85964647 is a deficient number, since it is larger than the sum of its proper divisors (1).

85964647 is an equidigital number, since it uses as much as digits as its factorization.

85964647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1451520, while the sum is 49.

The square root of 85964647 is about 9271.7121935487. The cubic root of 85964647 is about 441.3400041104.

The spelling of 85964647 in words is "eighty-five million, nine hundred sixty-four thousand, six hundred forty-seven".