164687500 has 96 divisors (see below), whose sum is σ = 393748992. Its totient is φ = 60000000.

The previous prime is 164687441. The next prime is 164687527. The reversal of 164687500 is 5786461.

164687500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 164687500.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5312485 + ... + 5312515.

It is an arithmetic number, because the mean of its divisors is an integer number (4101552).

Almost surely, 2^164687500 is an apocalyptic number.

164687500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 164687500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196874496).

164687500 is an abundant number, since it is smaller than the sum of its proper divisors (229061492).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

164687500 is an frugal number, since it uses more digits than its factorization.

164687500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87 (or 55 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 164687500 is about 12833.0627677106. The cubic root of 164687500 is about 548.1341733726.

The spelling of 164687500 in words is "one hundred sixty-four million, six hundred eighty-seven thousand, five hundred".