164487885 has 32 divisors (see below), whose sum is σ = 270667008. Its totient is φ = 85263360.

The previous prime is 164487853. The next prime is 164487887. The reversal of 164487885 is 588784461.

It is not a de Polignac number, because 164487885 - 2⁵ = 164487853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164487887) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88920 + ... + 90750.

It is an arithmetic number, because the mean of its divisors is an integer number (8458344).

Almost surely, 2^164487885 is an apocalyptic number.

164487885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

164487885 is a deficient number, since it is larger than the sum of its proper divisors (106179123).

164487885 is a wasteful number, since it uses less digits than its factorization.

164487885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2005.

The product of its digits is 1720320, while the sum is 51.

The square root of 164487885 is about 12825.2830378125. The cubic root of 164487885 is about 547.9126223749.

The spelling of 164487885 in words is "one hundred sixty-four million, four hundred eighty-seven thousand, eight hundred eighty-five".