164725633 has 4 divisors (see below), whose sum is σ = 165553600. Its totient is φ = 163897668.

The previous prime is 164725621. The next prime is 164725663. The reversal of 164725633 is 336527461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 336527461 = 17 ⋅19795733.

It is a cyclic number.

It is not a de Polignac number, because 164725633 - 2⁵ = 164725601 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 164725592 and 164725601.

It is not an unprimeable number, because it can be changed into a prime (164725663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 413685 + ... + 414082.

It is an arithmetic number, because the mean of its divisors is an integer number (41388400).

Almost surely, 2^164725633 is an apocalyptic number.

It is an amenable number.

164725633 is a deficient number, since it is larger than the sum of its proper divisors (827967).

164725633 is an equidigital number, since it uses as much as digits as its factorization.

164725633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 827966.

The product of its digits is 90720, while the sum is 37.

The square root of 164725633 is about 12834.5484143385. The cubic root of 164725633 is about 548.1764764970.

The spelling of 164725633 in words is "one hundred sixty-four million, seven hundred twenty-five thousand, six hundred thirty-three".