164747087 has 4 divisors (see below), whose sum is σ = 165075120. Its totient is φ = 164419056.

The previous prime is 164747083. The next prime is 164747111. The reversal of 164747087 is 780747461.

It is a happy number.

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 164747087 - 2² = 164747083 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 (164747083) 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, 163262 + ... + 164267.

It is an arithmetic number, because the mean of its divisors is an integer number (41268780).

Almost surely, 2^164747087 is an apocalyptic number.

164747087 is a deficient number, since it is larger than the sum of its proper divisors (328033).

164747087 is an equidigital number, since it uses as much as digits as its factorization.

164747087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328032.

The product of its (nonzero) digits is 263424, while the sum is 44.

The square root of 164747087 is about 12835.3841781226. The cubic root of 164747087 is about 548.2002737801.

The spelling of 164747087 in words is "one hundred sixty-four million, seven hundred forty-seven thousand, eighty-seven".