164871587 has 4 divisors (see below), whose sum is σ = 165408936. Its totient is φ = 164334240.

The previous prime is 164871571. The next prime is 164871617. The reversal of 164871587 is 785178461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 164871587 - 2⁴ = 164871571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164871517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268214 + ... + 268827.

It is an arithmetic number, because the mean of its divisors is an integer number (41352234).

Almost surely, 2^164871587 is an apocalyptic number.

164871587 is a deficient number, since it is larger than the sum of its proper divisors (537349).

164871587 is an equidigital number, since it uses as much as digits as its factorization.

164871587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537348.

The product of its digits is 376320, while the sum is 47.

The square root of 164871587 is about 12840.2331365127. The cubic root of 164871587 is about 548.3383313528.

The spelling of 164871587 in words is "one hundred sixty-four million, eight hundred seventy-one thousand, five hundred eighty-seven".