164899887 has 16 divisors (see below), whose sum is σ = 229548000. Its totient is φ = 105162624.

The previous prime is 164899877. The next prime is 164899901. The reversal of 164899887 is 788998461.

164899887 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 164899887 - 2⁴ = 164899871 is a prime.

It is a super-2 number, since 2×164899887² = 54383945465225538, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 164899887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164899877) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 789 + ... + 18177.

It is an arithmetic number, because the mean of its divisors is an integer number (14346750).

Almost surely, 2^164899887 is an apocalyptic number.

164899887 is a deficient number, since it is larger than the sum of its proper divisors (64648113).

164899887 is a wasteful number, since it uses less digits than its factorization.

164899887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17530.

The product of its digits is 6967296, while the sum is 60.

The square root of 164899887 is about 12841.3350941403. The cubic root of 164899887 is about 548.3697034189.

The spelling of 164899887 in words is "one hundred sixty-four million, eight hundred ninety-nine thousand, eight hundred eighty-seven".