164585287 has 6 divisors (see below), whose sum is σ = 169155168. Its totient is φ = 160135704.

The previous prime is 164585261. The next prime is 164585303. The reversal of 164585287 is 782585461.

It is a de Polignac number, because none of the positive numbers 2^k-164585287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164585207) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 58743 + ... + 61480.

It is an arithmetic number, because the mean of its divisors is an integer number (28192528).

Almost surely, 2^164585287 is an apocalyptic number.

164585287 is a deficient number, since it is larger than the sum of its proper divisors (4569881).

164585287 is an equidigital number, since it uses as much as digits as its factorization.

164585287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120297 (or 120260 counting only the distinct ones).

The product of its digits is 537600, while the sum is 46.

The square root of 164585287 is about 12829.0797409635. The cubic root of 164585287 is about 548.0207504086.

The spelling of 164585287 in words is "one hundred sixty-four million, five hundred eighty-five thousand, two hundred eighty-seven".